Starting off with the main IDW continuity, we’re getting The Transformers Spotlight: Cyclonus (Revelations Part One), which follows on from Transformers: Devastation, and The Transformers Spotlight: Wheelie, the fifth independent Spotlight issue of 2008 (which will make you love the character).
Transformers Animated, Vol. 3 continues the Animated cartoon in comic form, again using scans from the animation to produce the art.
Transformers Movie Prequel Special is a reprint of the two Target exclusive comics, one that were given out in theaters in the USA and one as an extra for Transformers on DVD at Target Stores (as well as Play.com in the UK).
Finally, Transformers Beast Wars Sourcebook TPB collects together the 4 individual sourcebooks and fixes many of the errors and omissions.
As a bonus, Chris Ryall has posted the final two covers for Spotlight Cyclonus and the one for Spotlight Wheelie. All comics are out on 18th June.
Source: The Transformers