Well, if get lucky, chances are Microsoft will give away Windows 9 for free !!!
Microsoft is going to release the second update to Windows 8.1 this year, and soon after that, the next version Windows 9.
Rumours are, that Microsoft may give Windows 9 free to those who have already bought Windows 8.1
Microsoft is said to be holding big internel event to take major decisions. Although nothing has been finalized yet, this could have been triggered by Apple's decision to give OS X 10.9 Maverick as free download to OS X 10.8 users.