Matt Vautour of the Hampshire Gazette has an article here. Jeff Thomas of the Springfield Republican has an article here.
Thomas states that Nick Diana has been moved from LG to Center. That leaves both guard spots open. I would speculate that Matt Austin will remain as LT and Sean Calicchio will return to the RT position.
Chris Hopkins, who filled in at RT for most of the year would probably fill one of the vacant guard spots. Vladimir Ducasse or Kevin Macon will probably fill the other guard spot.
Note that Matty Vautour states that there are only five starting spots in contention. I think Chris Pollard and Navy transfer Jeromy Miles are locks for the two safety positions (scroll down to yesterday's blog post for bio links on them).
The Gazette article states that Brown has high hope for newcomers Josh Jennings LB, Anthony Rouzier LB , Arron Fears WR and Shawn Allen DT.