Looks like the Diablo 3 Patch 1.0.3 will be released soon.
Here is a blue post about the release date:
Blizzard Blue Tracker: (June 12, 2012)
As Seryth said, we should all be getting our hands on patch 1.0.3 later this month :)
To get a good idea of what will be in the patch check out the Patch 1.0.3 Preview from Blizzard.