Hey, I know at the last meeting we were all pissed at the new rules for MTG. So I talked to some of the people at Borderlands as well as reading those tip cards when I bought a box of M10. And the rules haven't changed that much.
Basically, the new rules state that when combat damage is assigned, its assigned immediately. So basically if you have 3 creatures blocking, you can't kill one, then beef your own up, then kill another one before it kills you or whatever.
The other rule change is that there is no mana burn.