Squeak 4.1 was released this week. After all of the problems with the community splitting after the Pharo fork, Squeak appears to be back on track. Squeak 4.0 was a licence clean release without any new functionality but 4.1 includes all of the updates that were made during the re-licencing process.
Hightlights include a new look and feel based on the Newspeak UI, new anti-aliased fonts, the closure enabled compiler from Cog, core library improvements and modularity advances. More details can be found on www.squeak.org.
I hope that I can find the time to check it out more fully soon.