diff --git a/apps/web/src/components/whats-new.tsx b/apps/web/src/components/whats-new.tsx
new file mode 100644
index 0000000..3534b24
--- /dev/null
+++ b/apps/web/src/components/whats-new.tsx
@@ -0,0 +1,79 @@
+import { useState } from "react"
+import { Sparkles } from "lucide-react"
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogTrigger,
+} from "@workspace/ui/components/dialog"
+import { PATCH_NOTES } from "@/lib/patch-notes"
+import { useI18n } from "@/i18n/context"
+
+const SEEN_KEY = "nerdware-seen-version"
+
+/** Bouton « Nouveautés » + modale des notes de version (pastille si version vue ≠ actuelle). */
+export function WhatsNew({ className = "" }: { className?: string }) {
+  const { t, lang } = useI18n()
+  const [seen, setSeen] = useState<string | null>(() => {
+    try {
+      return localStorage.getItem(SEEN_KEY)
+    } catch {
+      return null
+    }
+  })
+  const hasNew = seen !== __APP_VERSION__
+
+  function markSeen() {
+    try {
+      localStorage.setItem(SEEN_KEY, __APP_VERSION__)
+    } catch {
+      // ignore
+    }
+    setSeen(__APP_VERSION__)
+  }
+
+  return (
+    <Dialog
+      onOpenChange={(open) => {
+        if (open) {
+          markSeen()
+        }
+      }}
+    >
+      <DialogTrigger asChild>
+        <button
+          className={`text-muted-foreground hover:text-foreground relative inline-flex items-center gap-1 rounded-md px-2 py-1 text-xs font-medium transition-colors ${className}`}
+        >
+          <Sparkles className="size-4" /> {t.whatsNew.button}
+          {hasNew && (
+            <span className="bg-primary absolute -top-0.5 -right-0.5 size-2 rounded-full" />
+          )}
+        </button>
+      </DialogTrigger>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>{t.whatsNew.title}</DialogTitle>
+        </DialogHeader>
+        <div className="flex max-h-[60vh] flex-col gap-4 overflow-y-auto">
+          {PATCH_NOTES.map((note) => (
+            <div key={note.version} className="flex flex-col gap-1">
+              <p className="font-heading text-sm font-bold">
+                v{note.version}
+                <span className="text-muted-foreground text-xs font-normal">
+                  {" "}
+                  · {note.date}
+                </span>
+              </p>
+              <ul className="text-muted-foreground list-disc pl-5 text-sm">
+                {(lang === "fr" ? note.fr : note.en).map((line, i) => (
+                  <li key={i}>{line}</li>
+                ))}
+              </ul>
+            </div>
+          ))}
+        </div>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/apps/web/src/i18n/en.ts b/apps/web/src/i18n/en.ts
index 8129c18..c9df5c1 100644
--- a/apps/web/src/i18n/en.ts
+++ b/apps/web/src/i18n/en.ts
@@ -10,6 +10,10 @@ export const en: Dict = {
     loading: "Loading…",
     error: "Error",
   },
+  whatsNew: {
+    button: "What's new",
+    title: "What's new",
+  },
   home: {
     tagline: "Geek culture party game",
     create: "Create a room",
diff --git a/apps/web/src/i18n/fr.ts b/apps/web/src/i18n/fr.ts
index c6edb91..48b7a56 100644
--- a/apps/web/src/i18n/fr.ts
+++ b/apps/web/src/i18n/fr.ts
@@ -8,6 +8,10 @@ export const fr = {
     loading: "Chargement…",
     error: "Erreur",
   },
+  whatsNew: {
+    button: "Nouveautés",
+    title: "Nouveautés",
+  },
   home: {
     tagline: "Party game culture geek",
     create: "Créer une room",
diff --git a/apps/web/src/lib/patch-notes.ts b/apps/web/src/lib/patch-notes.ts
new file mode 100644
index 0000000..f58a05d
--- /dev/null
+++ b/apps/web/src/lib/patch-notes.ts
@@ -0,0 +1,50 @@
+// Notes de version côté joueur (curées, bilingues). Sous-ensemble grand public
+// du CHANGELOG.md (qui reste la source de vérité technique).
+
+export interface PatchNote {
+  version: string
+  date: string
+  fr: string[]
+  en: string[]
+}
+
+export const PATCH_NOTES: PatchNote[] = [
+  {
+    version: "0.1.2",
+    date: "2026-06-12",
+    fr: ["Statistiques d'audience (Umami)."],
+    en: ["Audience analytics (Umami)."],
+  },
+  {
+    version: "0.1.1",
+    date: "2026-06-12",
+    fr: [
+      "Blindtest : bouton « Activer le son » et volume réglable.",
+      "Blindtest porté à 90 s ; le DJ peut désormais être n'importe qui.",
+      "« Qui l'a ajouté ? » : l'état de validation est caché (plus de triche).",
+      "Thème clair / sombre / système.",
+      "Décompte synchronisé sur tous les appareils.",
+    ],
+    en: [
+      "Blindtest: “Enable sound” button and volume control.",
+      "Blindtest is now 90 s; the DJ can be anyone.",
+      "“Who added it?”: vote status is hidden (no more giveaway).",
+      "Light / dark / system theme.",
+      "Countdown synced across all devices.",
+    ],
+  },
+  {
+    version: "0.1.0",
+    date: "2026-06-11",
+    fr: [
+      "Première version : Quiz, Images, Blindtest et mode Mixte.",
+      "Reconnexion après refresh, bots, historique des parties.",
+      "Interface FR / EN.",
+    ],
+    en: [
+      "First release: Quiz, Images, Blindtest and Mixed mode.",
+      "Reconnect after refresh, bots, game history.",
+      "FR / EN interface.",
+    ],
+  },
+]
diff --git a/apps/web/src/pages/home.tsx b/apps/web/src/pages/home.tsx
index a862dd9..8760e2f 100644
--- a/apps/web/src/pages/home.tsx
+++ b/apps/web/src/pages/home.tsx
@@ -8,6 +8,7 @@ import { useI18n } from "@/i18n/context"
 import { errorMessage } from "@/i18n/error"
 import { LanguageToggle } from "@/i18n/language-toggle"
 import { ThemeToggle } from "@/components/theme-toggle"
+import { WhatsNew } from "@/components/whats-new"
 
 const inputClass =
   "border-input bg-background ring-offset-background focus-visible:ring-ring h-10 w-full rounded-md border px-3 py-2 text-sm focus-visible:ring-2 focus-visible:outline-none disabled:opacity-50"
@@ -62,6 +63,7 @@ export function HomePage() {
   return (
     <div className="relative flex min-h-svh items-center justify-center overflow-hidden p-6">
       <div className="absolute top-4 right-4 z-10 flex items-center gap-2">
+        <WhatsNew />
         <ThemeToggle />
         <LanguageToggle />
       </div>
diff --git a/apps/web/src/types/globals.d.ts b/apps/web/src/types/globals.d.ts
new file mode 100644
index 0000000..e69467a
--- /dev/null
+++ b/apps/web/src/types/globals.d.ts
@@ -0,0 +1,2 @@
+// Version de l'app injectée par Vite (define), depuis apps/web/package.json.
+declare const __APP_VERSION__: string
diff --git a/apps/web/vite.config.ts b/apps/web/vite.config.ts
index 79a65e0..fe6ffe0 100644
--- a/apps/web/vite.config.ts
+++ b/apps/web/vite.config.ts
@@ -1,11 +1,19 @@
 import path from "path"
+import { readFileSync } from "node:fs"
 import tailwindcss from "@tailwindcss/vite"
 import react from "@vitejs/plugin-react"
 import { defineConfig } from "vite"
 
+const pkg = JSON.parse(
+  readFileSync(path.resolve(__dirname, "package.json"), "utf-8")
+) as { version: string }
+
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react(), tailwindcss()],
+  define: {
+    __APP_VERSION__: JSON.stringify(pkg.version),
+  },
   resolve: {
     alias: {
       "@": path.resolve(__dirname, "./src"),
diff --git a/packages/ui/src/components/dialog.tsx b/packages/ui/src/components/dialog.tsx
new file mode 100644
index 0000000..247a1f5
--- /dev/null
+++ b/packages/ui/src/components/dialog.tsx
@@ -0,0 +1,94 @@
+import * as React from "react"
+import { Dialog as DialogPrimitive } from "radix-ui"
+import { X } from "lucide-react"
+
+import { cn } from "@workspace/ui/lib/utils"
+
+function Dialog(props: React.ComponentProps<typeof DialogPrimitive.Root>) {
+  return <DialogPrimitive.Root data-slot="dialog" {...props} />
+}
+
+function DialogTrigger(
+  props: React.ComponentProps<typeof DialogPrimitive.Trigger>
+) {
+  return <DialogPrimitive.Trigger data-slot="dialog-trigger" {...props} />
+}
+
+function DialogClose(props: React.ComponentProps<typeof DialogPrimitive.Close>) {
+  return <DialogPrimitive.Close data-slot="dialog-close" {...props} />
+}
+
+function DialogContent({
+  className,
+  children,
+  ...props
+}: React.ComponentProps<typeof DialogPrimitive.Content>) {
+  return (
+    <DialogPrimitive.Portal>
+      <DialogPrimitive.Overlay
+        data-slot="dialog-overlay"
+        className="data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 fixed inset-0 z-50 bg-black/60 backdrop-blur-sm"
+      />
+      <DialogPrimitive.Content
+        data-slot="dialog-content"
+        className={cn(
+          "bg-background data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 fixed top-1/2 left-1/2 z-50 grid w-[calc(100%-2rem)] max-w-lg -translate-x-1/2 -translate-y-1/2 gap-4 rounded-2xl border p-6 shadow-lg duration-200",
+          className
+        )}
+        {...props}
+      >
+        {children}
+        <DialogPrimitive.Close className="ring-offset-background focus:ring-ring absolute top-4 right-4 rounded-md opacity-70 transition-opacity hover:opacity-100 focus:ring-2 focus:outline-none">
+          <X className="size-4" />
+          <span className="sr-only">Close</span>
+        </DialogPrimitive.Close>
+      </DialogPrimitive.Content>
+    </DialogPrimitive.Portal>
+  )
+}
+
+function DialogHeader({ className, ...props }: React.ComponentProps<"div">) {
+  return (
+    <div
+      data-slot="dialog-header"
+      className={cn("flex flex-col gap-1.5 text-center sm:text-left", className)}
+      {...props}
+    />
+  )
+}
+
+function DialogTitle({
+  className,
+  ...props
+}: React.ComponentProps<typeof DialogPrimitive.Title>) {
+  return (
+    <DialogPrimitive.Title
+      data-slot="dialog-title"
+      className={cn("font-heading text-lg font-bold", className)}
+      {...props}
+    />
+  )
+}
+
+function DialogDescription({
+  className,
+  ...props
+}: React.ComponentProps<typeof DialogPrimitive.Description>) {
+  return (
+    <DialogPrimitive.Description
+      data-slot="dialog-description"
+      className={cn("text-muted-foreground text-sm", className)}
+      {...props}
+    />
+  )
+}
+
+export {
+  Dialog,
+  DialogTrigger,
+  DialogClose,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+  DialogDescription,
+}