TVLine had a spoilery Blind item back on the 12th of December:
Which brings us to our latest blind item…
"Rumor has it that a hit freshman drama series is packing its bags and heading to a new hood in Season 2. And not just any hood — the biggest hood in the world: New York City!"
In one of the comments someone notes:
"Oh, and then there’s the new set being built. Plans call for a NYC brownstone."
Not sure what i think about that.... but Ausiello is usually right on and I haven't heard of any other shows moving locations. So this is what I am going with.