MTG Salvation

I'm just switching from playing standard to playing extended, I noticed in a few of the competitive deck lists I was looking over people were talking about "post rotation".

This begs the question - what sets are currently legal, when is the rotation, and what sets are legal after rotation?

The rotation is coming up in October. Invasion and Odyssey blocks, and 7th Ed, will rotate out.

The legal blocks will include: Onslaught, Mirrodin, Kamigawa, Ravnica, Time Spiral & Lorwyn/Shadowmoor. 8th, 9th and 10th will be legal too.

See http://www.wizards.com/default.asp?x=dci/announce/dci20080229a

Quote from Azerbaijan

The rotation is coming up in October. Invasion and Odyssey blocks, and 7th Ed, will rotate out.

The legal blocks will include: Onslaught, Mirrodin, Kamigawa, Ravnica, Time Spiral & Lorwyn/Shadowmoor. 8th, 9th and 10th will be legal too.

See http://www.wizards.com/default.asp?x=dci/announce/dci20080229a

as well as Eventide and Shards of Alara.