The thing is, if there's a game coming for the anniversary, and it's just beginning production, it will be very, very, very bad.
I bet the anniversary gift won't be game-related at all.
And did you see how Cox called his team his "CV: LoS" team and not MercurySteam? Interesting
If there's a game coming for the anniversary, it's NOT going to be released ON the anniversary. It's going to pull a Dissidia. Square announced Dissidia to be released for Final Fantasy's 20th anniversary, but actually delivered it a year late. That's likely to happen here, IF a game is in development.
On thing that would make me laugh my ass off in a crazy maniacal way would be if they announce LoS2, and it's NOT being made by Cox or Mercurysteam, but it being made by Konami of Japan, and is being overseen by IGA. LOL! That would be, in a way, horrible to ALL of us, yet would be bitterly funny. My brain would probably crack in half like a nut, and I'd be shipped off to mental ward.
As for the various things what to expect, I'd actually love ALL of them. I mean, many projects to commemorate the 25th anniversary would actually be fair, considering how important a 25th anniversary IS. Just an artbook or a game wouldn't suffice. Something big. Additional things. A party. A 25th anniversary series of items. Hell, a 3DS game, in addition to another game(be it 3D or 2D), artbook, 25 Year Ultimania-type book, new line of figures and perhaps a new comic series would be fair, IMO. Not that I'm expecting all of that, but that, IMO, would be, pretty much, a fair deal with how big a 25th anniversary is.