Now available on the Rapid Release Track, and due to be launched to everyone from May 7th, Google Documents and Slides has a new look chat feature.
Users will see thumbnails of other viewers, with profile pictures if they have a Google+ profile or colours if not. Clicking on the chat icon will open up a similar chat window to that used in Gmail, all viewers will be involved in a group chat, making it much easier to collaborate.
We like the change, which feels more natural, so look out for it from May 7th. The feature will be coming to Sheets soon.