Now that the official GSoC site is accepting student proposals, students should post their proposals to http://www.google-melange.com/gsoc/org/google/gsoc2011/phpmyadmin for them to be officially examined.
In the past, a proposal could be edited by the student after submission
and I believe it’s still the case. Mentors will interact with students
in private to ask clarifications about their proposals.
SourceForge.net: SF.net Project News: phpMyAdmin (including full news text)