There have been a few off-topic Nintendo NX threads, but no specific ones that I could find. With a March, 2017 release date still on track, the announcement is likely imminent. There have been several rumors so far, such as those that continuously come up, like that it won't use disk media, it will be a hybrid handheld/system, etc.
So, when will the announcement come? I'd say mid October at the latest. How powerful will it be? Under-powered? Will Nintendo shock us and include 4k compatibility? What games would you like to see for it? What will it be called? If I were Nintendo, I'd strongly consider sticking to the NX name, IMO it actually sounds pretty cool.