https://arstechnica.com/gadgets/2019/02/samsung-takes-six-months-to-update-to-android-9-pie/

This week, Samsung is finally updating its flagship devices to the latest version of Android, Android 9 Pie. The US versions of the Galaxy Note 9 and Galaxy S9 have both been getting Android 9 Pie updates across the various device/carrier combos. So far, we've seen reports of the Galaxy S9 and S9+ getting updated on Verizon, Sprint, and AT&T, while the Note 9 on AT&T has also been updated. We're sure more device/carrier combos will start trickling in over the next few days.