2018 with the HDS. Backwards compatible with the 3DS (and hopefully the DS?), a bit more powerfull than the Vita.
2019 with the new Xbox and Nintendo consoles.
Sony will use their advantage with the PS4 to wait a year and create a system way more powerfull than the other two in 2020, and come out with a lot of games already and not like the PS3 (and kind of PS4 too) first year drought. This time diference won't affect PS the same way the 360 did to the PS3.
Vita won't receive a proper successor. It will be a Bravia Mobile with gaming capabilities.
And somewhere between the 9th and 10th gen, the Videogame bubble will explode and we'll have another videogame crisis.










