The Reed campaign just announced endorsements from State Senators George Winner and Cathy Young, taking the best Southern Tier candidate (Young) off the list of possible Reed challengers.
Sean Carroll has a good explanation of what's going on in Massa's office post-resignation. Massa's chief of staff, Joe Racalto, will be running the office, but not voting, until the election occurs.
Finally, a correction. I linked to a D&C item that said 5 of 7 county chairs in the 29th support Reed. As an anonymous commenter pointed out, there are 8 counties in the 29th district. So it's 5 of 8, probably.