Here's the status of the Umple project:
My post about Umple on modeling-languages.com was rated the top post in November. This shows that there is a lot of interest in the technology.
Some important improvements to UmpleOnline have just been installed. These make it much easier to lay out UML class diagrams. As you drag classes around, associations now don't cross their class boxes. If you have recently used UmpleOnline, you may need to clear your browser's cache for the new version to be loaded.
A couple of teams in the ICSE SCORE student project competition have been using Umple, and I have been very impressed by their work.
Our open-sourcing work is progressing and we hope to complete the transition to Google Code in about a month. Meanwhile Umple can still be accessed from the Umple home page.
My collected posts about Umple can be found here.