After a few days of lead-up, we now have our answer to what GW's big announcement for is
Codex: Adeptus Custodes.
Honestly I'm a little let-down by this. Yay, more Space Marines...? I mean, the models look nice, and I may grab some as a secondary detachment for another Imperial army. But I was really hoping they'd at least try to get the rest of the Imperial/Xenos/Chaos books out before adding yet more new factions. How about Adeptus Sororitas ever? Or how about Orks and Tau?
What does everyone else think? Excited for the Gold-is-the-New-Black space marines?