Microsoft just announced that Windows 10 will be available July 29th as a free upgrade to Windows 7 and 8 users. I do however recommend you hold off until they iron out any bugs. If you have any questions, give me a call

http://www.huffingtonpost.com/2015/06/01/windows-10-release-date_n_7482372.html?utm_hp_ref=technology&ncid=fcbklnkushpmg00000042