Acer has confirmed October 23 as the release date for Windows 7 according to the technology news site Pocketlint. We already mentioned earlier today that Microsoft was aiming for a holiday season 2009 release for their upcoming operating system Windows 7 which would go along with the release date leak. The article interestingly enough speaks of a 30 day free upgrade period prior to the release of Windows 7 which would be different from the currently expected free upgrade period beginning on July 1. The new free update period would start two months later than expected.