As you have probably already noticed, Google Summer of Code 2013 has been officially announced. As usual, we want to participate with phpMyAdmin.
We really want good students to participate, so our selection process will be again slightly stricter than in last years. So if you want to participate as a student on phpMyAdmin, please check our applicant guide. The most important thing is that we expect you to show knowledge of the code before being accepted and fixing some bug for upcoming 4.0 release is great opportunity to start with that!
Also student themselves usually don't bring new ideas, so it's pretty much on the organization to come with projects it would like to see. We are currently collecting these on our wiki. We will most likely add some new ones to the list as well, so feel free to get in touch if you have some brilliant idea. Also voting on feature requests might help us to choose what users see as most important improvements.