BWalnut said..
I've been told the Sv2 still works on all the old gear. It would be pretty shocking for them to force the change to a new mast that is so expensive. I can't imagine that. Sizes I've heard reported are 700, 900, 1000, 1130. Still waiting to hear about AR but I haven't heard anything other than "upturned tips" and "felt great" from people who have ridden it.
And a mono-block construction .