Microsoft didn’t release a new Windows 10 insider build last week due to a bug that prevented UWPs from opening as per a tweet by Dona Sarkar. So, the latest build released for the Fast ring is still the Build 17046.
#WindowsInsiders we’ve hit a bug that prevents UWPs from opening so we will not be flighting a new build today. Have a great weekend! ❤️
— Dona Sarkar @ #MSIgnite (@donasarkar) December 1, 2017
But Dona’s latest tweet has raised hopes for a new build this week. A new build may come not before Wednesday however.
#WindowsInsiders we have a build in mind. You know what that means. Canary, selfhost the next 2 days & if all goes well, W or Th release.
— Dona Sarkar @ #MSIgnite (@donasarkar) December 4, 2017
This upcoming preview build may be the one to bring two significant features Timeline and Sets to Insiders soon. You can read more about timelines and sets features by clicking here.