Plenty of hard techno producers are now making music described as minimal. For Adam Beyer to change style from the king of grungy loops to uber polished shuffle funk required a fair bit of experimentation on his part. Thats mainly happened in the last 5 years or so.
Fair enough, new ground isn't being broken on a daily basis, and the whole new minimal movement isn't particularly innovative given that hawtin can claim to be on the cutting edge, and still play all his old plastikman tracks alongside the newest stuff around and most people won't notice the difference.
In terms of shifts and movements there's stuff still happening, but its more subtle I suppose. I love the really polished carl craig sound, and the mix of melodic elements that falls somewhere between house and techno. That sound is new and different, even if it isn't exactly groundbreaking of innovative. It does show evolution though, and experimentation on the part of the artists. People aren't making music which conforms rigidly to a set of rules, in order for it to sound like "techno" and not something else. Well, thats my take on it anyway.