As the others have mentioned only the RT devices came with a free copy of office.
I was very sceptical about Office 365 and to be honest any subscription type service, I suppose that is why I was still using Office 2003 on my old XP device until a few months ago.
However I gave in so we signed up for 365 and haven't looked back, we went for a family subscription so me, the wife and my three children all have the latest copies of Office and all of it not just Word.
Also we now all have 1 TB of OneDrive space (YES THAT IS 5 TB), all of a sudden it has become a very good deal.
Since then I have taken the plunge and taken out an Xbox Music pass as well, already paid for itself and I have only had it a couple of weeks.
Bob