The new part of BnW is released namely Black and White 2
Offcourse there are some major differences with the first game but i'll get into that later.
The fisrts thing you should know is that you will be able to transport your creature from the original to the sequel.
It isn't known for sure if you will be able to bring tyke with you but it's unlikely due to the large amount of players that didn't like him.
Ok, now to the new stuff in the game.

The game is supposed to be completely rewritten, there will be new buildings new wonders and lots more stuff.
Peter Molyneux wanted to put the accent more on the good and evil thing, so now there will be real differences, as an example: when you are purely good little flowers ill grow everywhere where you hold your hand over the ground but if you're completely evil all kinds of rotten plants and dry ground will be at the places where you touched the ground.
The most important new thing to determine your alignment will probably be war
This was a request was made by lots of people and Peter and Lionhead thought of it theirselves to,
So now there will be war between the two villages, your creature can even lead them into battle and help them but be carefull because your creature can get shot by bows and arrows aswell.
You won't have direct control over the armies but you will be able to steer them a little, for instance a good god will be defencive and steer the villagers towards peace while an evil god will try to get in war as often as possible.
Another new thing is that you will be able to build weapons for your armies, each tribe will have different weapons so will the japanese have katana's and will the norse have another type of weapons,
you can't build weapons from thin air so you need to have a new resource in your village store, this resource will be metal.
When you have enough of this your creature will start recruiting an army Another thing LH has told us is that the building of walls will be very important
ffcourse they will help you defend your people but there's more, your creature will be able to break them down by kicking it or throwing obkjects towards it and he'll even be able to climb them (so i've heard but i'm not sure if it's true), but anyway they are supposed to be the most important new building in the new game

Another big thing is that creatures will be able to carry weapons around, these weapons aren't supposed to grow with the creature so I don't really know how this will be done but it's bound to look nice.

Well this is all I know for now
Got anything I missed simply mail me