It's the Vita port of ZnK, yes. Fully voiced event scenes and it sounds like quite a few other extras along with it.
As for the trailer tune, it's possible they'll do a pre-release cd as a bonus item for mail orders but we don't know yet. They'll certainly have another of those OST Minis they're so fond of when the game gets released though. You honestly haven't missed anything on the YsC front though, big info drought since the game was announced.
Ahhh thought so about the site. And yeah figured for the song release Damn. Was hoping it'd have hit sooner than usual lol oh well. Thanks for the info. Wonder why they're keeping everyone in the dark for so long...?
Got me. Until yesterday I'd have said that they're holding back because they want to get more practice working with the Vita on a low-risk title like ZnK's port but they're not handling the actual porting and it's releasing later than I expected (sometime in the summer) so that's probably not it. They know how much people have been clamoring for this game so I'm sure they've got their reasons, I just haven't a clue what they could be.