Another Halo 5?

Considering the title is Halo 5: Guardians, do you think it is likely for another entry into the Halo 5 brand? Like a Halo 5: Arbiter or another sequel/spinoff with the Halo 5 engine & title like H3 had with ODST? Or will they go from H5G straight to H6? I personally feel like if H6 was next in line then the Guardians moniker wouldn’t have been needed. H5G story-wise didn’t quite feel like the plot successor to H4 with no Didact or Librarian…perhaps H5G was a sort’ve smaller side precursor story (No! Not those Precursors!!!) to the full Halo 5? I admit I could be grasping at straws here but I’m not sure.

if they did, it’d probably be DLC or digital release only

I suppose there could be and of course I would buy it, but I don’t think there will be. I think it was just a subtitle to help focus the game since there wasn’t going to be a halo ring in it.