Denying any responsibility for this is: David Morgan-Mar
The author writes:
For the second half of this strip, you'll need to be at the Giants versus Blackbirds game on the 14th of next month, and keep an eye on the video screen during the three-quarter time break.
I would have made it a bit closer to the publication date of this half, but you wouldn't believe the waiting list for special announcements at the stadium. Must be a lot of guys proposing to their girlfriends or something.