Quietly available in North America as we speak
The rather excellent, if originally pricey, phone/tablet RPG Chaos Rings has snuck its way onto the PlayStation Store, available for purchase on PS Mobile and PS Vita devices. Though only announced for Japan, it's already on the US store, with an English language option.
Available for $7.99, it's more or less a straight port, optimized for PlayStation devices and including a setting for standard physical controls as well as touchscreen swipin'. If you've not played it before, it's a fun game that's worth checking out, and it'll give your Vita something to do -- always a plus!