It's hard to say. The website in OP's post definitely looks bogus. But saying that, Shimano has been doing 11-speed stuff on their road bikes for at least a couple years now, so it's only a matter of time before that technology moves over to mountain bikes.For real this time?
This is the one deterring factor in making the switch. Can't ad the wheel part into the budget equation. :/It'll still force you to buy new wheels...or at least a rear if your hub is not compatible with the 11sp freehub.
I was on the verge of going XX1/01 until I found out that my new rear wheel is not XD compatible. I doubt that the Shimano 11sp will be compatible either.
It is actually not a very big difference: compare the following gear ratios with 28 vs 30 chainring:I like the Di2 but the range of the cassette is to limited 11/40 compared to srams 10/42