PSP numbers dropped slightly, which is understandable considering there's new colours coming on 3/5 and 3/21, not to mention Dynasty Warriors Multiraid, Idol Master, Basara, Persona, and Gundam vs. game.
And then there is Dragon Quest 9 for DS which is bound to increase HW sales.
PS3's got Yakuza 3 and RE5
SO4 and RE5 should improve x360 sales as well.
Not so sure about Wii, is there anything big coming in the near future?