Well, the Flash season 2 teaser is already released during comic con and it got me excited on what story would develops from there. At least from season 1 we knew that The Rogues is now establishing to be formed, Gorilla Grodd has been making some encounters with the Flash, and the last episode of the Flash we can see that the reverse-Flash has been erased existence (Maybe). Highlight reel from season 1 can be seen on the teaser - you can check it on this link.

What excite me the most is of course the new transformation of the Flash itself near the end of the clip. While in the new 52 comic book they have progressed the story until why the Flash is transforming into more advanced and new look of the Flash - but the story in the season 2 might have some tweaked modification for that. Especially when you heard the back voice from the dialogue possibly in the season 2, with mentioning of Jay Garrick, and how the Flash's world is now in danger.

Like mentioned before, you can watch the teaser in the link provided - and what do you think? 

I am still between things right now, so I might not be able to comment or anything - instead I'll just try to gather up some more news or information I can get on :)