Revisions include a redesigned bottom half with greatly enlarged kneepads made from a much more robust compound. There is now a keypocket on the outside of the leg (complete with drain hole). The "head-over" piece now has a toggle system to cinch it down tighter if neccessary. The shoulders are now without the "over-shoulder" seam which improves flexibility when paddling.
New graphics and colour schemes of course....
A lot of the 5mm winter version are bought by people who already own the 3mm summer version and vice-versa, you can't get a better recommendation than that!
Series 3 will be out Aug/Sept 2008.. Advance order your now!