I jumped the gun and got myself a UNO Drum, which will fit nicely with the UNO synth here.
When I registered it and went to the download section, I saw that there is a firmware 1.0.1 available. Unfortunately, no release notes on it.
For Peter/Ryan, please note that with the download of the Windows and Mac updater, the actual files are reversed. When clicking on the Windows download you get the Mac one, and vice versa.