Google Is Announcing Something New with Android on October 29th

Google just sent out a mysteriously cute invitation about an Android event happening on October 29th in New York. All the invitation says is 'the playground is open'. What does that mean?

The event will be streamed on YouTube.com/Android and you know we'll be there to give you everything you need to know about what's next with Android. Will this be something dealing with a Nexus phone? Another OS update? We'll find out at the end of the month. We'll take your guesses below.