Google purchased Quickoffice over the summer, but the popular productivity app isn't being put out to pasture just yet. In fact, Google's just given it an update that brings more integration into Google's own productivity suite, Google Drive.
With this update, when you have both GDrive and Quickoffice installed on one device — hardly out of the realm of possibility given that Quickoffice is a preload on many devices — Docs, Sheets and Slides (as in word, spreadsheets and presentations) will open up in Google Drive.
So the merging continues. We'll see how long it is before the Quickoffice name gets merged as well.