I ordered a 6.5-300 right after they announced it in the new MarkV and it was 6-7 months after that when I picked it up. If you ordered one in the Accuguard I would guess the wait might be slightly shorter. The sooner you order the farther up the list you will be.
I actually paid for the whole thing, including 5 boxes of factory ammo. I ordered my ULW through Scheels in St Cloud, Cabelas will order now too.