This isn't related to the E3 announcements, but I just got my standard edition copy of Game Tengoku CruisinMix Special in the mail today from LRG and popped it in to play, turns out only 2 of the 3 promised pieces of DLC are on the disc, which I'm a bit upset about (especially since it is $9.99 to buy separately, and it being on disc was part of the appeal)
As per the product listing, this version is supposed to have have Clarice, Homura, and the voice pack DLC on disc, turns out Homura is not unlocked. I don't think the CE versions of this game have gone out - I know there was a little bit of scuttlebutt because that version has an exclusive 4th DLC (Tatsujin) - but I'm curious if that version has all the DLC it is supposed to...it must be a different printing, presumably, if it has different on disc DLC.
The game has been printed already, so I guess nothing can be done, just felt like I've been lied to on this one. Seems like a pretty big mistake to make.
Like you said, it's probably too late for anything to be done, but I'd suggest tweeting about it and let LRG know.
That's probably the most reasonable course of action...I'm a old man (slightly exaggerating :P) who doesn't care for social media, so I don't actually have a Twitter account. But if someone else happens to see my post and wants to tweet on my behalf, feel free, I wouldn't mind. (And I'm sure someone else other than me who is Twitter-savvy will probably notice the same issue with their copy of the game and complain at some point anyways...guessing I was just the first person to actually open their copy and play it, haha).