-imps are defensive once again (heroes can build several types of turrets and cover)
-weak infantry, strong vehicle (baneblade returns yay; basilisk, too which will be strongest arty again; leman russ as tier 3)
-first race to build vehicles in tier 1
-units include stormtrooper, HWTs (now suppress; equivalent to devestators) and catachan devils
-globals include orbital bombardements and unit reinforcements
heroes are:
-Inquisitor (offensive ranged; female witch hunter who can ignite single targets and has flame aoe)
-Lord General (healer; can... well, heal, call all sorts of reinforcements and has a mustache now Oo)
-Lord Commissar (melee supporter; can cloak and has melee specials, much like lictor alpha; regular commissars are also in)
Facts about the campaign:
-story is that ten years after chaos rising the Imperium orders an exterminatus on Aurelius and you have to stop it because there is a terrible secret hidden in the sector
-campaign story is very similar for every race but some details are changed every mission for each race (they wanted to make an own story for each race but ran out of time)
-different enemies each time you replay the campaign (generic; doesn't affect story i guess)
-imp campaign heroes are Castor, Adrastia and Merrick
-playing the campaign is now much more similar to multiplayer: you have a base, you tech for new units and you have to capture requisition points. (right now a regular guards squad is 280 req and 8 pop and they repair stuff)
you can choose if you spend earned xp on the known upgrades (willpower, strebgth) of your heroes or level your other units which increases their general combat performance