Earlier today, some users noticed that the Xbox Game Pass app for iOS had been updated with a handful of additions to the list of games slated to leave the service soon. Among the titles included on the list were the 2016 title DOOM and Halo Wars: Definitive Edition, the latter of which stirred up some fans because Larry Hryb, also known as Major Nelson, had previously suggested that first-party exclusive titles would never leave the Game Pass subscription.
If you were one of the people who were unhappy with the apparent removal of the aforementioned titles, the Xbox Game Pass Twitter account clarified that neither DOOM nor Halo Wars will be leaving the service - at least, not yet.
It's worth noting that the tweet specifically states the games aren't leaving the subscription "at this time", which doesn't invalidate the possibility that they will be removed eventually. The idea that Microsoft-owned titles would never leave the platform may stem from an inaccurate interpretation of Hryb's words. As Eurogamer's Tom Philips noted at the time, it seems like the promise was to continuously add Xbox exclusive titles to the platform on a permanent basis, not to keep existing titles on the platform forever.
With that being said, at least for now, you can keep enjoying DOOM and Halo Wars through the Xbox Game Pass subscription. There are, however, four other titles still slated to leave soon - The Escapists, Darksiders 2: Deathinitive Edition, GRIP, and Thief of Thieves - so you may want to play those while you can.
Update: Microsoft has reached out to Neowin to provide further clarification in this regard. Halo Wars, and other titles from Xbox Game Studios, are planned to stay on Xbox Game Pass going forward, so they won't be removed.