According to the above tweet, Nintendo will be holding a presentation regarding Fatal Frame Wii U on July 17th via the NicoNico service. According to Google Translate, this is what the tweet says in English:
“Minutes to 13:30 on Thursday, July 17, “zero” The latest series / “zero” media mix recital will be relayed live smiling. We will information horror game in development for the Wii U “zero” latest work is also presented. Please see if you are interested.”
If you’d like to check out the stream when it airs, you can do so over on NicoNico at this link.