Microsoft today sent out invitations to an event on October 26 in which it will discuss "what's next for Windows 10." The invitations follow months of rumors that a Microsoft Surface all-in-one PC, so naturally it's expected to be launched at the event. VentureBeat adds: It's also likely that Microsoft will talk about updates coming to Windows 10, given the billing of the event. Judging by the pomp of last year's Microsoft hardware event, the October 26 affair will be a big deal, too.Microsoft's Surface tablet, or Surface Book 2-in-1 aren't expected to see a refresh. Anyone who would like to see Microsoft take another go at smartphones at the event?