From Rotoworld:

Tigers acquired shortstop Edgar Renteria from the Braves for RHP Jair Jurrjens and outfielder Gorkys Hernandez.
That was remarkably quick. That Renteria is being dealt is no surprise, and it figured that the Tigers would be high on the list of suitors. However, we don't see wht the Braves felt they had to make the move today when better offers could have come later. This simply isn't a great return for a player who was one of the best in the NL last season. Renteria hit .332/.390/.470 in 2007, and he's under control for a very reasonable $20 million over two years (the second year is at Detroit's option). The Tigers did quite well to get him now. It'll certainly head off any Alex Rodriguez speculation.

Wow, that was quick! I wonder if Sabean was in on this?