2.X?

[M-Type]

Hello all. Got my hands on an Amazon gift card for Easter, and went to check out what there is to see over there (for T2k stuff at least). They have the T2k 2.0 rule book in my 'price-range', but what's the difference between 2.0 and 2.2? Note: They don't have the 2.2 rule book anywhere on the site.

For all of those in my campaign, I won't be changing up the rules on you guys (80% sure), but I'm looking at this for the long-run, since I know the 2.X is in more high regard.

Thanks for the help!