Well, you can find the entry list & results of the 1st round of VLN (which is basically the same as the 'ring 24) here:
http://www.vln.de/rennen.gb.php?id=2009-04-04
3 new classes of car which you might expect at the front:
SP9 = GT3
SP10 = GT4
Cup 3 = Porsche Cup
Don't expect the Opel Astra DTM car to show up for the '24, but any of the others are possible.
Will Radio Le Mans cover the race again this year?