Rejected!
As I expected, Tcpreplay was not accepted for the Google Summer of Code. Most likely because compared to many of the other mentoring organization applicants, Tcpreplay is not able to accept many students- hence the overhead is too high.
Of course, if you are a student (or anyone else for that matter) and are interested in working on Tcpreplay and learn about networking, I’m always willing to help people get up to speed on the code and contribute.