The most important info in this post is at the bottom.
I'm still not entirely sure that G.rev can "license" that style of game, but that's a whole other can of worms.
Correction to my post: the G.rev press release has mentioned both the trademark and copyright of Senkou no Ronde being infringed. I wonder if G.rev would make the copyright infringement claim alone, had the game's name be something other than Gensou no Ronde.
From the PD
official site: by buying the Dengeki PlayStation magazine from the
PS Reader Store, you can download an exclusive PS Vita theme featuring the 4 PD titles.
In the Weekly Famitsu magazine
released on the same day, there is another interview with ZUN, Ezaki, Oyamada and Ito. It is shorter, but contains more important information.
A funny side note: Dengeki uses the "indies" spelling (see my
post), while Famitsu uses the "indie" spelling.
Another note: the article's sidebar refers to Genius of Sappheiros as "Touhou Soujin Engi V", which would be a seriously misleading name for a PS Vita version.
They started by discussing the purpose of the programme: to secure the future of doujin games. According to Ezaki, Windows-based doujin games have already plateaued. In 2013, SCE launched the "PlayStation Loves Indies" support programme for indie developers, and he thought this could be a way to revitalize doujin games.
From Ito's point of view, you cannot have doujin games without Touhou Project. So when ZUN's friend Ezaki and Oyamada approached him, he immediately recognized they have a common goal. What remained was to convince ZUN.
ZUN's reaction to SCE's offer was: "do they absolutely need my participation?" He thought he simply didn't have enough time (to do the work involved in porting Touhou). On the other hand, he has no problem giving them the permission for Touhou derivative games.
The interviewer asked ZUN why he was no longer against Touhou appearing on other platforms. ZUN said his change took place during the Indies Game Fest 2013 event at Tokyo Game Show. The event made he feel that on one hand, "it won't be long until indie games becomes everyone's favorite thing", and on the other hand, "doujin games does not have the future these things have".
(If you recall, he went to Atlanta immediately after Tokyo Game Show. Those two weeks must be unforgettable for him.)
ZUN will not oversee the PD games. (That is to say, he would not request any changes to make the games conform to canon better.)
Regarding technical support for developers, Ezaki said they will facilitate knowledge sharing through measures like an (internal) wiki.
When discussing the freedom developers can enjoy, Ito put things into a new perspective by saying "Touhou is the only permission Play,Doujin has for derivative games at present", and SCE would provide as much support as possible to enable developers for content they need. In other words, their long-term plan is to obtain licenses to publish fan games for
other IPs.