The Vita got one solitary mention during the Sony E3 Press conference, but I'd be surprised if you remembered. It was name dropped alongside World of Final Fantasy, which is also coming to PlayStation 4.
Sony totally haven't forgotten about the handheld though. They promise. To prove it, they released this trailer quietly on the internet showing upcoming game on the console. Check it out here:
The sad thing about the Vita is that it is actually a pretty wonderful console. Sony just seem convinced on forgetting it. This handheld deserved better. At least it is a great little machine for great indie games. That is at least one niche it has filled.