After beating the Wii U, what's next for PS4 in Japan?

[Jranation]

Kerotan said:

So the ps4 just passed the Wii U at around 3.2m units sold.  What consoles are next in line?  

 

1) Vita

2) PS3

3) Wii

 

And then later on we will see if the NX can beat the PS4.