Over the last few years, Team NINJA and Koei Tecmo released the superlative Nioh 2 on PS5 and PC, the Ninja Gaiden Master Collection on all platforms, Wo Long: Fallen Dynasty on home consoles and PC, and announced Rise of the Ronin with PlayStation Studios for PS5...
toucharcade.com
TLDR:
Team Ninja has at least 3 new projects in the works.
Hirayama admitted that working on multiplatform release at same time for WL was tough on the team, as compared to releasing the PC version later like the Nioh games.
The team is now satisfied with the state of the game which led to the decision to release a Complete Edition.
No plans to release a physical version of the Complete Edition but may consider it if there is enough demand.
Bugfixing of issues will be ongoing even after Complete Edition is released.
No plans for Wo Long sequel for now. Bugfixes will still be done even after Complete Edition releases.
No information on possible Nioh/Wo Long collabs with Rise of The Ronin at this time.
No plans for a new Ninja Gaiden, or Dead or Alive right now.