I just tagged and uploaded a tarball for Plasmate 0.1-alpha2. Plasmate is our Plasma add-on creation tool and we're aiming for a summer release. Improvements since the alpha 1 release last month include not only a large number of bug fixes (thanks to everyone who tried it out and reported issues they came across!) but also some great new features, of which probably the most cool one is the online integration which allows you to grab a Plasmoid via GetHotNewStuff and instantly start working on it as well as upload your own creations using your opendestop.org account.
Download it and give it a whirl!