"Project Hobart" (apparently the cool sounding codenames are reserved for gaming hardware), was pushed under the rug ahead of E3 to focus on the Xbox One S and revealing next year's high-end Xbox One, Project Scorpio. As WC tells it, Microsoft was going to order 300,000 units of the device and it'd release shortly after E3. Furthermore, Microsoft was apparently forced to prematurely reveal Scorpio after Sony spilled its guts to the Financial Times about PlayStation 4 Pro, just ahead of gaming's grand gala.
That last bit makes a lot of sense considering Microsoft has said close to nothing about the console in terms of real information, and chose to rattle off system specs and video of a motherboard instead of a console and games in June.
But this isn't all. The company apparently scrapped a few non-Xbox devices ahead of last month's Surface Studio event as well, according to The Verge. CEO Satya Nadella reportedly cancelled a Surface Mini tablet at the last minute, in addition to an Amazon Echo-like device that would feature the Cortana digital assistant.
Again, these are all reports with no official confirmation from Microsoft, so there's still the chance that we could see any of the aforementioned devices at some point in the future.