Come and ask us about developing interactive widgets, the message spec
changes for the next version of IPython, the new kernel spec system, or
anything else about extending or working on IPython.
E-mail me with your Google e-mail address if you'd like to join us in the video chat - we'll try to get as many people as possible into the Hangout. If we have a lot of people, or you're on a slow connection, join our development chat room, which we'll be logged into at the same time: http://www.hipchat.com/ghtNzvmfC