Hangouts to replace the GTalk back-end of Google Drive Docs Chat.
Which is honestly something that probably should've happened a long time ago, when you consider how long ago it was they started phasing out GTalk for Hangouts. It'll be interesting to see if it gets bells or whistles it didn't previously have.
Originally shared by G Suite
We want to be sure you can continue to use chat in Docs, Sheets & Slides, so we’re making a few changes → goo.gl/w11wli