Microsoft is unveiling a new offer on Thursday designed to tempt consumers over to its subscription Office 365 service. Between July 18th and September 28th, customers who purchase a year-long Office 365 Home Premium subscription or a 4-year Office 365 University subscription will get 12 months of Xbox Live Gold at no extra cost. It appears the offer is not available in the US, but most of Europe, Asia, and Australia have it listed.