Anyone tested out the newest Windows 10 RS4 v.1803 (Spring Creators Update)?

[dpcdpc11]

The latest major update from Windows 10 (RS4) has been released to the Insiders Program.
Did anyone had a chance to test it out and if yes I would really appreciate some feedback like:
- is the UltraUXThemePatcher still working?
- are the old themes (from 1703&1709) still working or do we have to replace the shellstyle.dll?
- are there any changes to the maps?

Any info would be awesome!