The timing of this console release would put it in and around the same time that Forza Horizon (Fall 2014 - possibly September), Sunset Overdrive (Fall 2014), and Quantum Break (Holidays 2014) are to be released, according to the poster.
The poster listed a variety of other claims, including the possibility that Microsoft is working on an Xbox One without an Optical Disc Drive; this console would cost approximately $399. Elsewhere on the games front, the poster said that Halo Anniversary 2 will be 1080p, iffy on the 60fps; Black Tusk's cancelled project was called Shangheist; that studio is moving on to work on Gears of War, but will need around two and a half years; Halo 2 Anniversary includes beta for Halo 5; Fable Legends is coming in summer 2015; and the first Titanfall DLC will come 45 days after release with another due 120 days after release.
There are a lot of claims there to soak in, but we'd advise taking it with a pinch of salt considering all the anonymity that's floating around. Still, we would like to get our hands on one of the white consoles; they look lovely.