There is a chance that the whole Ratchet and Clank trilogy will be released for the PS Vita soon.
UK retailer ShopTo listed the Ratchet and Clank trilogy for PS Vita on its website. The release date has been noted as June 20th, 2014.
Sony has yet to officially announce the existence of the Ratchet and Clank trilogy for PS Vita. Sony has already released the trilogy on PS3 so it’s a possibility they are porting for PS Vita owners.