I doubt the vita version will happen any time soon.
They'll probably hand the project over to the studio that created resistance and COD.
Or hopefully the studio that did PSASBR on Vita. A port, yes, but seem to be good on the technical side of the system
Don't see reason to doubt Kevin Levine, he supports Sony. He went ahead and announced the game before development even started as a favour to Sony, he's already said he's excited about it and produced mock ups recently.