Well, there's a little bit more on the website now.
http://bsrc.com/about-us/
BSRC has secured operational authority from the United States Surface Transportation Board (STB) to operate passenger service between Worcester, MA and Providence, RI and pending negotiations with the host railroad plans to commence service in 2018. BSRC has secured station rights in Worcester, entered into a long term lease to own for the historic train station in Woonsocket, RI and maintains an amicable working relationship with AMTRAK regarding Providence.
Not clear to me if an "amicable working relationship" involves the reconfiguration necessary at Boston Switch to allow access to the platform tracks at Providence from the P&W.
Rolling stock will be reconditioned equipment that will carry an estimated 150,000 annual passengers in its first year of operation (three percent of the total commuter population) growing to eight percent—or nearly four hundred fifty thousand annual riders—within five years.
150k/year is roughly the ridership of the Music City Star, the Nashville TN commuter rail line, in its first year of operation.
No word on what equipment will be, but the pics on the website show what appears to be an NJT Comet III cab car... and an FL9 (!)