The invitation has a clever play on words: "Join us for some tasty new treats and much s'more" - a reference to Android M "Marshmallow," the newest version.
Google's new gadgets have leaked several times in recent weeks. First, we'll get two new Android phones, one made by LG and another made by Huawei. The Android new blog Droid life reported this week that the LG model will be called the Nexus 5X. The Huawei model will be called the Nexus 6P.
Google is also expected to announce an updated version of the Chromecast, the device that plugs directly into your TV and lets you stream content from services like Netflix. 9to5Google was the first to report that a new Chromecast is coming.