I submitted a presentation proposal about AppScale for this year's PythonBrasil (no word yet on whether it was approved). Is there anything in special I should highlight?

Drop me an email at raj@appscale.com and we can discuss all the recent features we've added. One service we're able to provide because of AppScale's API is disaster recovery for GAE applications. We presented it recently at Gigaom's Structure conference: http://online.wsj.com/article/PR-CO-20130620-908833.html