Microsoft earlier this month quietly extended the life of Windows 10's debut edition, the version launched in July 2015.

Rather than end support for Windows 10 v. 1507 -- Microsoft labels the OS by year and month -- in March, as announced last year, the company will issue the version's final security updates in May, probably May 9, that month's Patch Tuesday.

The new date was posted as a revision to a mid-January blog post by Nathan Mercer, a senior product marketing manager for Microsoft. In the original entry, Mercer had tapped March 26 as the end of 1507 "servicing," a company synonym for updating and patching.

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