I'm aware of the other thread (here), but it doesn't seem all that lively. So I'll make a new one with some basic information about the game, instead of bumping the other thread again.
POSSIBLE SPOILERS IN THIS THREAD.
Launch trailer.
Classes:
Soldier
Adept
Engineer
Sentinel
Vanguard
Infiltrator
Scy vs Fy - Contains a lot of spoilers
Part 1
Part 2
Part 3
As many will know, Mass Effect 2 continues from where ME1 left off. Although there is a small portion missing between the games, it can be covered in one of the books.
So, as it's on the same story, you keep the character you completed the first with, if you want. It works quite simply.
Video on it here.
All editions of the game come with the Cerberus network card, which just allows you to get the DLC for the game from release. Much like Dragon Age: Origin's system. It's mainly there to reduce the amount of pre-owned buys.
There are 10 (11 including DLC) party characters. You'll need to gain their loyalty throughout the game.
Achievement list.
You'll notice the cheevo for armour customization.
The game is out January 26th/29th.
Since I'll be recieving it at the later date, I won't be able to get a review out as early as I'd like to. But I'll write one up as soon as I can, if I don't, it's just because it's so good that I can't bring myself to spare time from it.