The layout is completely different: the army list plus options is now combined with the unit description which seems sensible.
One problem has surfaced. The Mek description refers the reader to the Mek Weapons list but I can't find one. Hmmm. Well my Mek has a kustom blasta and will still have one. So there.
A Lord of battle slot is available to a normal detachment so I get to field my Stompa. Thraka is now a Lord of Battle, incidentally.
More when I've digested.
Onward, upward.