Touhou Project creator Zun announced a new project for PlayStation 4 and PS Vita during Sony Computer Entertainment Japan Asias press conference this morning.
The project appears to bring Touhou Project derivative works to the PlayStation 4 platform. Its slogan is, Touhou fans will create and raise it, together with PlayStation, suggesting its not just making Touhou Project games playable on PlayStation 4, but also letting users share their created works.
Source
Also some background information on the aforementioned "Project" from fellow GAF member cuc:
This is the official site of the project: http://www.mediascape.co.jp/zunps/
As you can see, the company responsible for this project is called "Mediascape". According to its own profile page, the president of the company is Nozomu Ezaki. Google tells me, Nozomu Ezaki is none other than ZUN's buddy, D.N.A., of the doujin circle D.N.A. Softwares. D.N.A. has always been helping with ZUN and Twilight Frontier on the business side of things.
In other words, the company that will be publishing Touhou fan games on PlayStation systems is ZUN's own people, not some outsider.
No release date has been announced for the games. And the games announced so far are Mystery Gensokyo 3, Genius of Sappheiros and Touhou Sky Arena -Matsuri- (with more doujin games possibly coming). The official games haven't been confirmed though there's a (slightly) extended Trailer possibly hinting at it. A PSVita logo also does show up on the Zunps website