Not a big release, but it does fix a bug preventing Debian from picking up the latest code and also takes advantage of a bug fix introduced in OS X Leopard. Basically, under OS X prior to 10.5, you could not forge the source MAC address AND send a full sized ethernet frame. There was a bug which limited you to 1486 instead of 1500 bytes.
UPDATE: Crap, major bug in 3.2.2 breaks Linux and all other platforms which don’t have BPF devices. 3.2.3 will be available soon.