Well the new stuff about fedora is fedora 4 thats about to hit us shortly here is there schedule.
14 Mar test1
30 March String change deadline (data provided)
11 April test2, string build freeze (builds completed)
27 April Translation deadline (data provided)
test3 devel freeze
9 May test3, translation build freeze (builds completed)
... Continual freeze, only critical bugs fixed until release
23 May Absolute devel freeze
6 June Release open, announced
http://fedora.redhat.com/participate/schedule/