Microsoft boss Bill Gates has dropped a hint about the next version of Windows.
He said Windows 7 could be released "sometime in the next year or so" during a Q&A session at a meeting of the Inter-American Development Bank.
After the event a Microsoft spokeswoman said the new version was scheduled for 2010 - three years after the January 2007 release of Vista for consumers.
But industry experts warned that Microsoft's estimates about delivery dates have often proved optimistic.
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