There had been news about it previously, but the state approved it yesterday and is expected to put up the majority of the funding:
krdo.com
They're essentially building it next to the existing one, much like Robert Kraft did with Gillette. Except, obviously, Mr. Kraft put up his own money where the state of Massachusetts hemmed and fought at the time about paying for the infrastructure before finally agreeing to it.

State says it wil approve location for new football stadium - KRDO
By Stephen T. Watson, Tim O’Shei Click here for updates on this story ORCHARD PARK, New York (The Buffalo News) — New York is willing to accept a new stadium for the Buffalo Bills in Orchard Park if this remains the team’s preference, Gov. Kathy Hochul said Monday morning. This is the first...

They're essentially building it next to the existing one, much like Robert Kraft did with Gillette. Except, obviously, Mr. Kraft put up his own money where the state of Massachusetts hemmed and fought at the time about paying for the infrastructure before finally agreeing to it.