What's the future of frostwolf? Will it be upgraded to WoD ?

I would like to play on frostwolf but i have few questions ,

when retail will pass to legion expansion, will warmane open a WoD server ?

If so, will it be a new and independent server or is more likely that frostwolf is going to get upgraded to wod ?

Frostwolf will be on pandaria for ever or what ?

I would like to play on it but im looking for a server that goes on with expansions and not stuck in one

Too early to think of that. No plans in having a WoD realm, also.
If you want to play the game to progress through expansions, retail does that effectively.