All right, finally got a reply from WSOP:
Most of the available projects [B]require fluency in C, C++, C# or
Python[/B]. If you think you could tackle a 2 month project in one of these languages, then by all means apply! However, if you feel this is too big a leap from Java, there are plenty of other ways to get involved in GNOME.
We plan on running a general (unpaid) mentoring program for people who would like to get involved in GNOME development, but [B]aren't sure where to start, or who don't yet have the relevant coding skills[/B]. We're still in the early stages of organising this, so I'm afraid we can't set you up with a mentor as part of that just yet, however I'd be happy to email you once the program is established. In the mean time, I'd recommend you join the GNOME Women project, which is dedicated to encouraging women to contribute to GNOME. You can subscribe to the project mailing list by visiting http://mail.gnome.org/mailman/listinfo/gnome-women-list. The GNOME Women wiki page (http://live.gnome.org/GnomeWomen) has a great list of suggestions for getting involved in GNOME.
I don't think I'll be fluent in Python by the end of the month, but the unpaid mentoring program sounds like a great opportunity for those who are interested.
BTW, the WSOP application form is now available: http://www.gnome.org/projects/wsop/apply.html