Later with Jools new season has started, and thanks to the wonderful "filmon" app I watched the two firsts episodes. I doubt very much that Mark Knopfler will appear at least in a standard programme.
Sting was featured on the two firsts episodes, I dont know yet if he would be on a third. The stage is quite the same than the one in MK pictures but there is a difference, there are at least 5 different stages at the same time, and there are one group in which one. While one group or singer is playing, the other ones are on his stage waiting, while Kings of Leon were playing, for instance, you can see Sting watching them from his own stage. Jools is introducing one band, and then the next etc etc. Looks like they record some bands in a row and then they do separate programmes.
If MK is gonna be on Jools, it has to be a special programme, unless Jools do the trick and goes from one band to MK recording and its so well edited that nobody notices it.