JNIPort 2.0 is released. JNIPort 2.0 for VisualWorks is available from Cincom's Public Store Repository. JNIPort for Pharo/Squeak is available at SqueakSource. Installation instructions are on the Wiki at SqueakSource. You can of course also download JNIPort 2.0 from the Download page.
It adds Pharo 1.1.1, Pharo 1.2, and Squeak 4.2 as platforms where you can use Java classes in Smalltalk.