Anywhere that Hideo Kojima goes, Geoff Keighley will follow. The imbalanced friendship between the two has resulted in a fair few announcements over the years, and now it sounds like another one will take place next week at a Summer Game Fest live show.
Keighley has taken to Twitter to confirm "Hideo Kojima will join us live on stage for" Summer Game Fest. He doesn't say what he'll actually be doing as part of the showcase, but since it is based entirely around game announcements, there'll presumably be some sort of Death Stranding 2 trailer to show.
Kojima has recently stated the launch trailer for the upcoming PS5 game will be released roughly a week or two before launch. With the early access release for Death Stranding 2 set for 24th June, the Geoff Keighley show does just fall outside of that timeframe. However, given that all of Kojima Productions' focus at the moment will be on the game, rather than OD or Physint, it's difficult to see Kojima turning up with anything else. Perhaps he has another podcast to promote instead?