First Party Titles Not Being Developed for PS Vita
Focus Is More on PS4 Now
Speaking with 4Gamer (translated by Siliconera), Sony Computer Entertainment Executive Vice President Masayasu Ito stated that Sony's focus is more on the PlayStation 4 with no first party titles for the PlayStation Vita being worked on.
Currently, there are no first party titles that are in development for the PlayStation Vita. Third party companies are working hard on the PlayStation Vita, so we here at SCE have strategized to focus on our new platform of PlayStation 4. Masayasu Ito
While Sony themselves aren't working on titles for the system, third party companies have titles being made for the Vita. As stated, more of Sony's work is being centered on the PlayStation 4.
Source: 4Gamer Siliconera