Very recently an update is being rolled out for Galaxy S6/ S6 edge which comprises of many Microsoft Apps. The Apps include Office, Word, and PowerPoint on the devices. Both handset already feature in its App pre-installed Microsoft One Drive and One Note.Reportedly the size is 220 MB.

Samsung Galaxy S6/ S6 Edge update includes several Microsoft Apps

The Build number is LMY47X.G925FXXU2COH2, whereby the Apps did not get installed without user consent. However, the availability of update could be region and carrier specific, however, nothing has been confirmed so far.