An article coming in from Jason Schreier of Kotaku reports that Pillars of Eternity and Fallout: New Vegas independent developer Obsidian Entertainment may soon be acquired by Microsoft. This comes from three people familiar with the negotiations, but the contract doesn't appear to be signed as of this reporting. For them, "it's a matter of when, not if." Of course, neither party would comment on anything regarding the story.
Earlier this year, Microsoft made waves during its E3 2018 press conference by announcing it had acquired Ninja Theory (Hellblade) and Playground (Forza Horizon). However, they promised at the time they weren't done making announcements along with a pledge to focus more on PC development, making Obsidian a strong addition to their lineup. Also, considering all the money troubles Obsidian has had over the years trying to remain independent, this looks to be a strategic move by both companies.
Based on the fact Microsoft will be bringing back their global X0 conference in November, that is likely the place where this news may be confirmed. Either way, we'll be sure to let you know whether this is the case.