FromSoftware's head, Hidetaka Miyazaki, may have spilt the beans on the studio's future projects as he revealed that while they are working on Sekiro: Shadows DIe Twice and Deracine, there are two unannounced titles they are busy with.
Miyazaki's info came through an interview with the Japanese website, 4gamer, but the translation was provided by Gematsu. Apparently, FromSoftware's 3.5 product lines were clarified in the interview, stating that 0,5 is Deracine, 1.0 is Sekiro: Shadows Die Twice and 2.0 are the unannounced titles.
Due to Metal Wolf Chaos XD and Dark Souls Remastered being requested from Devolver Digital and Bandai Namco, they were not included in the product lines. This means the unannounced titles are original FromSoftware work, and possibly not remasters.
4gamer asked for confirmation and Miyazaki stated this is true. According to Gematsu's translation, he added that this is not the time to discuss the details, but teased that both games are in the spirit of FromSoftware. More info will be made public when the time comes, as the titles likely still in early development.
Considering that Miyazaki stated Dark Souls was completely done with The Ringed City release, the new titles are more likely to be either original IPs or sequel(s) for Bloodborne that the fans have been craving for years now. Then again, the title did release as a PlayStation 4 exclusive, which may have been what deterred FromSoftware from creating its sequels.
The studio showed that their intent was to build games for the three mainstream platforms - PC, PlayStation 4 and Xbox One as opposed to either console exclusives or single platform exclusives, by releasing Dark Souls 3 and planning to release Sekiro: Shadows Die Twice on all of them.
Granted, Souls' origins started on PlayStation 3, but ever since the first Dark Souls, FromSoftware strived to branch out to other platforms. It is unknown whether they have an exclusivity deal with Sony when it comes to Bloodborne's potential sequels, but the existence of one could possibly be the wrench that is stuck in FromSoftware's Bloodborne gears.