Well, I did talk about this in the MLB thread.
I'm iffy on it. There is extra motive in this deal. Mostly that Kenny Williams has done this for one reason, and that is to get Adam Dunn. It has been reported by csnchicago that the Nats really like Jackson, and more than likely would want him if a deal were in place. That is exactly what Kenny Williams wants, so it moves the White Sox closer to getting that left handed power guy in the line-up that he wants.
Now, should this deal not occur, then he is going to be a solid #4 in the rotation. Freddy, even though he just won his 10th game of the season, is still looked at by most as the 5th on the team. Jackson has a good arm, but played on a horrible team in Arizona. This could help turn around his season, as he will now be expected to perform at a very high level to match what the other starters have been doing the past two months.
As far as Hudson being included, I'm a little bummed to see him go. I liked what I saw from him last season in September, and know he can perform better than he has in his three starts since his call-up. But he will be a solid 3 or 4 in any rotation so I wish him good luck.