The macOS Sierra 10.12.1 public beta train keeps chugging along, but my MacBook is stuck on 10.12.1 public beta 2 (16B2333a), which I installed over two weeks ago. Apparently the current public beta is public beta 4.

I've tried going to System Preferences → App Store → Your computer is set to receive beta updates and toggling it off, then reinstalling the update enabler from beta.apple.com to turn it back on (since the preference disappears when you turn it off.)

Is there any way to convince App Store to show me updates past public beta 2?