They have some content planned for the fall. Might be a Halo remake, might be a big map pack of remakes, who knows. But I'm guessing we'll be playing something new on the anniversary.
Tip for the 40k Firefight Challenge today:
2X Score Attack on Beachhead. Rock the DMR, get a lot of multikills, you'll get one or two Wraiths at the end, and if you're lucky a four pack of Elite Ultras, who are practically bursting with points. (
I came very close on Corvette, as well - if a Wraith had shown up at the end that would have done it.) I went and looked back on my scores in Firefight and found the modes where I'd cleared 40,000, and that was the easiest one.
Fun challenge.
I've gone to PAX every year for the past six, and you can bet I'll be there this year.