I find it quite hard to believe because:
1 - It is coming from the same company who said the NX was going to use Android, only to get corrected with a huge No by Nintendo a few days later.
2- It is coming from the same company who said the Wii U launch price would be $250 instead of $300.
3 - It goes completely against Kimishima's words of supporting the Wii U with more sellers like Splatoon and Mario Maker.
4 - It makes no sense. People expect a new console in December? Lol.
This paper is more wrong than they are right. Wii U makes them money.
Nintendo would not spend the time and money on localization of something like Tokyo Mirage Sessions if this was true. There would be no point otherwise. That in itself is a new project.
They announced a new Paper Mario which is likely a fall or holiday release. You don't do that if you are not producing systems. Maybe next year Nintendo does pull the plug but not this year.