[Athanasios]

I assume they want a winter release, which winter btw occurs to be the "best" winter in long time - no BF or COD around this time (noone mentions FailOps 2). Winter + Spring are the bigest selling periods and aparently winter comes first. Let's say November as release month.

So, if we assume they want 3 months beta testing, exlcuding November (last month is always Gold phase), then the beta should begin in the start of August.