The sharp eyes over at the Google Operating System blog noticed that Google quietly changed some wording in Google Docs from "PDFs" to "files." While small, this could signal that Google Docs may soon support the viewing and editing of other file types, and possibly double as an online storage service--like the fabled GDrive.

Google has long-allowed users to upload PDFs to Docs. These could be viewed in Google's online viewer, but not edited. However, the service would not allow other items ...