Are there any plans to impliment full-screen alt-tabbing?

I use two AMD 5850's in xCrossfire and the only way that this can be enabled is in full-screen, but the trade-off in the loss of alt-tabbing makes this an annoying choice!

With the huge amount of ways that people communicate whilst online and the need for players to be able to nip in and out of game for research etc, an option to enable alt-tabbing would be appreciated (although I know this is not likely to be the top of anyones to-do list)!