Sky NZ have first right of refusal for UCI events produced by the UCI. Red Bull had the rights to MTB before Sky bought the UCI rights so we got the World Cups, but not the World Champs as the Champs are UCI produced. This is why NZ is one of the few countries that GCN will say “not available in NZ”. We can get GCN+ for non UCI world cup CX and some lower level road events. Sky carries pretty much all road events and all of the UCI world cup CX races.
If, and it’s an unknown if, Discovery uses GCN+ to screen events there is a chance NZ won’t be included thanks to Sky. Which would suck for many in this neck of the woods. (I only have Sky for the cycling and have GCN+ for the non UCI stuff and their specials)
As for commentators, Rob Warner and Martin Ashtyn started GMBN together, so I would very much think Rob will follow the move to Discovery. Plus he is the voice of MTB.