Waoh, really interesting project and a good looking flyer!
I would only change the screenshots on the right so that the last one shows the current phone view and not that ugly one and instead of the "Tuner Tool" screenshot maybe you should have one from the Terminal or PyGTKEditor because this flyer is for developers.
Also the code in the background could be a little bit stronger (better to see).
Keep up the good work, I think I will print some flyers and "forget" them at promising places ;-)