Following the stable release last month, the first update to Android 15 is rolling out with the November security patch for the Pixel 6, 6 Pro, 6a, 7, 7 Pro, 7a, Tablet, Fold, 8, 8 Pro, 8a, 9, 9 Pro, 9 Pro XL, and 9 Pro Fold.
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https://9to5google.com/2024/11/06/android-15-november-security-patch-pixel/