Win10 Mobile Preview 10586.36 may be a cumulative update of the

December 5 news, Microsoft began to push the Win10 Mobile Build 10586.29 new version to the Insider user, the version of the upgrade interface has been exposed last night. Insider Fast Track users can now open their phone to check for updates.
And just reported this morning that Microsoft is preparing a new Win10 Mobile preview update that will fix the 10586.29 issue. There is now evidence that Microsoft is testing the latest Win10 Mobile Preview 10586.36 internally, which may be the cumulative update for the upcoming Win10 Mobile release.

Win10 Mobile Build 10586.36 still belongs to the Win10 TH2 branch, after the script homes reported Microsoft also has been tested Win10 RS1 branch, including the latest and 10.0.11085 10.0.11084. Today Microsoft has pushed the Windows 10 PC version of RedStone major update to the first preview version of 11082, but it is not clear when Microsoft will push the first Windows 10 Mobile RedStone version.