I wouldn't get your hopes up about De Jong, but at least Pienaar is in the bag and Amoah shows some promise. Besides which, the not-so-distant future captain of BVB has been resigned for another few years and that's as good a piece of news as all three of those players put together!
I wouldn't call them "in talks". BVB are after him, but there aren't any exclusive negotiations. Don't believe everything you read in the press.
At least Kehl is removed from the players in question. With Koller and Rosicky facing possibilties to play abroad now Kehl is a Dortmunder for some while. Although these days football contracts aren't worth much... =(