They've been doing it for a while. I think it's just to authenticate them. Obviously they aren't actually grading the coins in there.
I believe their website defines "Gem Uncirculated" as MS-65 to MS-70, and I think they've been doing bulk submissions for at least four years.
Yes they have slabbed them that way for a few years now. I have also seen rolls form ICG, ANACS, and PCGS.
i had a chance to get a roll of pres dollars slabbed by icg a few months ago id much rather get to enjoy each coin individually. imo cody
I've seen these for a few years now. Don't see the point of it. Someone down the road will crack them out.