To see wath in the 1.2 see the invasion time V1.2 topic.
########## NEW IN V2 #########
Its a bit hard to understand but fun to play:
WONDER CAN NOW RESEARCH TECH AND BUILD UNITS.
At the pyramids you can research Medicine,its the only way to have it.
Medicine now allow you to build the "Medicine Assembly",where you can have Patriotism(only way to have it).
The Colossus allow you to have supply(only way to have it)
Supply allow you to build guard tower,more powerful than normal tower.This tower allow you to build city guard and capital guard,very cheap units,with lots of LOS.
The hangings gardens allow you to have architecture.
Architecture allow you to build the heavy lookout,limited firepower to grounds and air units,with great LOS and more HP.
The terra cotta army is enough good i think,no tech or units here.
The colosseum allow you to build gladiator,Extremely fast(about 1 seconds) units good in attack but very weak,great because of their speed.
You can also build "Army Fort",this is a powerful fort,great ranged,strong,where you can research"Operation" (after tactics at the fort of course).
At last,Each 5 civs(greek,bizantines,romans,barbarians and gaul) ave Elite infantry,more powerful than heavy infantry.