Dude can't you read!! i says it has drag and drop feature but also patching if u wish to potentially increase compatability, speed, trainers, mods, etc.
I think that part of the announcement could be tricky. Patching *usually* means the use of a client software to transfer the ROMs. If compat. problems arise they could argue "well, then you should try the patching way instead of direct drag and drop". This is a potential "you depend on the client software updates" device much like slot-2 solutions. But time will tell.