According to Yakuza series producer Daisuke Sato, there will be new information about the next Yakuza title starring Ichiban Kasuga coming on July 10. This was revealed in an interview with Gamebase.com.tw (via Gematsu) held during a launch event for Yakuza 5 on the PlayStation 4.
Specifically, the question was if Kazuma Kiryu would appear at all in the new title. Kiryu being the main protagonist for for the main entries in the Yakuza franchise up until Yakuza 6: The Song of Life.
Here is what Sato in response to the inquiry:
"At this time, that is not a question I can answer. On July 10, we will announce the supporting actress for the new title, as well as share the latest information on the new title, so please look forward to it."
Don't forget that Judgment came out last week (or tomorrow for physical copies) on the PlayStation 4. It's a spin-off game from the Yakuza devs at Ryu Ga Gotoku Studio and it is fantastic.