The update isn't live yet (as of 3:15 UK) but stand by your refresh buttons. Fez leads the way today with the joys of Cross Buy, with the big games sticking by their boxed-copy brothers until Friday. Destiny of Spirits should be worth a go as its free (with in-app purchases), and I'm tempted to try Invizimals, hope its come on greatly since the PSP versions. However, Sony's lack of coverage suggests not.
On the DLC front, check out costumes for LBP and Soul Sacrifice, plus some more paid missions for Tecmo's monster hunting game Toukiden. Full details for all PS formats here.
Deception IV: Blood Ties (out 28th March)
MXGP (out 28th March)
Destiny of Spirits
Fez (Cross-Buy PS4/PS3/Vita)
Invizimals: The Alliance