"Negligent"? First, Game Freak doesn't owe us anything. They could keep absolutely everything under wraps if they wanted to. Second: we have more information this far out from release than we have in a very long time, at least.
Here's the math: Black and White were officially announced in early April, and released in mid-September (a gap of about five months), while X and Y were announced in early January and will be released in October (about nine months out). So that's four months earlier in development that we got the official announcement. At this point in BW's development, they hadn't even been announced - the only thing we knew was that Zorua and Zoroark existed. Going back a little further, Diamond and Pearl were announced way early, but at this point in their development we just knew about a few random Pokémon: Lucario, Manaphy, Weavile, Mantyke, Chatot, and Buizel, with the last two only just having been revealed. That makes six, the same as the number of X and Y Pokémon we know of now (not including new Mewtwo) - only this time it includes the starters, the version legendaries, and a new Eeveelution, which I think is a lot more exciting, and gives a lot more indication of where the games are going than an event legendary plus a few random species do. It had been a little while since we got some news post-Sylveon, true, but we figured that would happen as the movie's advertising ramped up. And then new Mewtwo came along, which is big news no matter how you feel about it.
Also, remember that there's a lot more to reveals this generation than CoroCoro and Smash. There's nothing scheduled concerning the games, but the fact that the initial announcement was out of absolutely nowhere highlights that any other announcements could come at any time too, and there is a new movie trailer scheduled for the 18th that could reveal more about new Mewtwo and Sylveon. All in all, I think we're pretty well-set for information compared to the past, and even the information we know they haven't given us yet (like Sylveon's type and evolutionary method, and everything about new Mewtwo) hints at some really big possible reveals to come. So I don't know about you, but I'm really excited, and I don't feel "neglected" at all.