Server layering question for classic

If Blizzard is going to implement server layering, will it only be for the beginning of the game’s launch or will it be permanent?

Apparently it’ll only be in the beginning, until things settle down.

Ok well as long as it’s temporary. I do not want it at all long term or permanently. If they have populations that are too large that just means blizzard should invest into better server infrastructure. Classic WoW may hold a lot of potential.