Prep for Big Bang in GMS

This might not be true. If one of the game server manage to pull the string 1st, the rest will follow up in next 1-2 months.

This does not make any sense.
Historically we do not follow that closely, especially for large scale changes that will need an adjustment period and a significant degree of tweaking.

The new classes have been coming to us faster than almost anything else we've ever gotten, but they're relatively easy to do.
This coming before January is unlikely. At an absolute rush they could try for September in time for school to resume, but they've already got a schedule laid for the rest of the year and I don't see them incorporating this yet.