I just created a new release of Mint and DrJava with Mint: May 8, 2010 (r15405). The release is available from the Mint implementation page:
The DrJava team released a second beta version of DrJava yesterday, drjava-beta-20100507-r5246.
Nothing has changed on the Mint language side, but there have been minor changes in the Mint build process, and several examples have been added.
There have been plenty of new features and bugfixes for DrJava, and they have been integrated into DrJava with Mint. Most importantly, DrJava with Mint will now automatically select the Mint compiler on start-up.