After a rocky start with the windows 8,microsoft tried to set things straight with windows 8.1 but yesterday microsoft unveiled its latest and final os windows 10,Windows will be offered as a free update for all lumias and pcs running on windows 7,8 and 8.1 and i promise you this is it ...
the dream of one windows for all was duly achieved as all windows devices are well connected with the new os ..now xbox users can stream their games on their pc byvjust logging in their Xbox account....the windows 10 is almost perfection as all faults are erased putting windows above all os's.vWindows 10 comes with a new office app which gives you everything we desired for in an office app,it is touch friendly and fully equipped and now we can edit our documents fully even on our phones.The windows 10 is mouse and keyboard friendly and is everything windows 8 is not...

There are more things unveiled in the windows event but i can't cover all one of such is the hololens which stole the show it is already at the moment the invention of the century
For more info google windows 10 event or go to wpcentral.com for every detail of windows phone and news on windows phone