The Windows 10 Mobile Creators Update is now rolling out to Insiders in the Release Preview ring, despite the fact that the Creators Update for Mobile was supposed to roll out to the public today.
Microsoft says unsupported devices on the Release Preview ring will continue to receive cumulative updates for the Creators Update, which is nice. The new build number is 15063.251.
Previously, it was believed that unsupported devices would be left behind, but if you enrol in the Insider program, you'll still get cumulative updates for this unsupported release.
If you are a Windows Insider on an unsupported device, you can stay on the Windows 10 Creators Update and receive Cumulative Updates via the Release Preview ring. However, you do so at your own risk as it's unsupported. If you are on one of these unsupported devices and in the Fast or Slow ring, you will need to switch to the Release Preview ring via Settings > Update & security > Windows Insider Program.
Make sure you check for updates in the Release Preview ring to get the latest updates and the Creators Update for Mobile!