Nintendo has announced that it will finally reveal the console codenamed Nintendo NX later today. The console will be revealed via a "preview trailer".
It is unknown what the preview trailer will show though it is likely that it will reveal what the console looks like and how it will work. The trailer could also show gameplay of several launch titles.
The trailer will be released at 7AM PT / 10 AM ET / 2PM GMT / 3PM BST.