Rumors of Mario and Sonic at the Winter Games

That last Mario and Sonic rumor was false, but there's another rumor of Nintendo and Sega are teaming up again for a sequel to the popular Mario and Sonic game. The Spainish Nintendo magazine didn't say much info about the game, but said that Sega and Nintendo were making the second Mario and Sonic. The last rumor was wrong, but I'm guessing this rumor would be true