Interested in:
XCOM: Enemy Unknown, the demo alone is excellent.
Dishonoured, though I keep calling it Dish Honoured.
Adventure Time, should be entertaining even for those who don't know the show.
007 Legends, not overly keep I've not seen anything that indicates that it'll be anything more than "ok".
I was interested in RE6 until I played it at a friends, probably the worse proper RE game ever made and if I had a Vita I'd play the Little Kings Story release seeing that it turned out to be a sequel...and that is all the Vita has to offer this month imo.
A few PC titles:
Hell Yeah: Wrath of the Something Rabbit hit PC yesterday and is actually really excellent, plays a lot differently to what I expected.
Of Orcs & Men looks to be a very promising action RPG, that is out on 10th.
Giana Sisters: Twisted Dreams is out on 23rd, already pre-purchased with that Kickstarter thingy. Seems great if the demo is any indication.
PainKiller: Hell & Damnation is out 31st, can't remember if I've ever played any of these games.
Walking Dead Episode 4, fucking love this series. The writing, story, dialogue alone shits on the TV series.
Edit:
La Mulana is now on GoG.com. Fantastic game!
http://www.gog.com/e...ecard/la_mulana
EDIT 2:
Forgot all of those, Retro City Rampage for PC, Vita & PS3 is out Oct 9th:
http://gbatemp.net/topic/335600-retro-city-rampage-is-finally-out-next-week/