The document announces PyCon JP development sprints to be held on September 17th from 10am to 6pm in rooms 351a, 357, and 358. The sprints will focus on topics like Sphinx, Django, App Engine, and Mercurial. Wireless internet access will be provided and food is not allowed in the conference rooms. A #himopy sprint introducing Python climbing and slacklining clubs will be held from 2-3pm.