gamepass

Good day everyone! I am a recent Xbox owner and I must say I'm not completely happy of how limited the console is while offline. Can't access recordings or screenshots and most settings are locked behind an internet connection. I could live with all of that but I also realized something else...

So im looking into buying a series x and gp ultimate via xbox all access and i was wondering, Is gamepass applied to my xbox account when the first payment is made or is it only activated when the console arrives in november. I was hoping to be able to use it on pc for a bit before the console...