In spite of Insomniac’s best efforts more and more information about a PlayStation Vita version of Ratchet & Clank: Into the Nexus seems to leak out. First there was a listing for the PS Vita version of the title by Newegg, then a rating by the ESRB, and then a leak through a (questionable) source which came with a fair share of controversy. Well guess what? There is more.
A savvy Reddit user posted a trophy listing for Ratchet & Clank: Into the Nexus which displays a PlayStation Vita tag along side the (intended) PlayStation 3 marker. Moreover the very same user later added that through some sleuthing about in the Disc Benefits, it seems that the game was intended to take advantage of the ever-popular cross-buy functionality.
As per usual none of this can be deemed official, but it is admittedly hard to ignore the sheer amount of information to the contrary.