I think they said there would be no cross-spec, yeah. I’ll see if I can find it.
Can I spend points in a spec tree that is different from my current spec?
No, you will not be able to spend points in a spec tree different from your own. If you put points into the Restoration Druid tree, and swap to Balance Druid, the effects from the Restoration tree will no longer apply to you. You will have new points to spend in the Balance tree!