Contrary to which much people think, Windows 7 was not realized the 22 of Julio, or even months before. Windows 7 RTM was created the 13 of Julio 2009.
I Am Going to try to explain to you that step that day in Microsoft:
In the summer of the past year, Windows 7 went up to around the completitud, meetings with the partners of Microsoft were realized to decide which would be the code of gold, that is to say, the final version, after several insolvent meetings the 13 of Julio with 8541 positive votes Windows 7 was signed like RTM (6.1.7600.16385 win7_rtm. 090713-1255)
At the moment it is practically impossible to less still find serious problems in Windows 7 and with the internal accomplishment of Service Pack 1.