Let's hope this is true. In fact I think that this is probably true. Indeed, I cannot help find the timing of this rumor release, 2 days after the uproar caused by their marketing count down, well... very adequate. So we probably have a leak coming straight from Canon themselves, which give the rumor credibility. Multi-layer may mean foveon type sensor, it could also mean BSI sensor. Future will tell.
I guess quite a few folks got frustrated this week and I wouldn't be surprised if the a7r saw a peak of sales in the coming days. It only makes sense for Canon to try to stop that any way they can.
Now, the question is the actual availability of that dream multi-layer camera. My personal bet is May 2015. Any takers?
Cheers,
Bernard