Board Thread:Super Smash Bros. Discussion/@comment-12408658-20151215223909/@comment-6684591-20151217185908

Here is a link to a video that covers the recent interview where Sakurai said 'He is not sure if the Smash Bros. development team could handle making the next Smash game on their own.' and even implies he might even go on to direct the next Smash game.

https://www.youtube.com/watch?v=y0sy0dn3r8U

If that isn't enough for you, here is the interview article itself:

http://www.sourcegaming.info/2015/12/13/sakurai-fe25/

You have to read to the very end (or skip to the very end) in order to find the part at which Sakurai was quoted in the video on saying he had decided that he wasn't certain on leaving the Smash series or not.