Here is a not so surprising leak. Google is already hard at work perfecting the next versions of Android. It looks like we will have another incremental build of Marshmallow sometime in the coming months and possibly a whole new version of Android sometime next year. According to leaker @LlabTooFeR the builds are already available in Google labs. This is not huge news, but it points to a scheduled release cycle like what we saw with Lollipop and Marshmallow.
via @LlabtooFeR