The invitations are out. It's now official that Microsoft (NASDAQ:MSFT) will be unveiling the much-rumored update to its Surface line of tablets on September 23.

This is welcome news as we now know with complete certainty just how much of a flop the original Surfaces have been in the market. The question now shifts to how Microsoft plans to improve the device and hopefully reinvigorate its waning appeal with consumers and businesses. The only problem is that, if the early production leaks are at all accurate, Microsoft will be doing anything but that with its next tablet. In fact, quite the opposite: It's starting to look like it has another dud in the making. Although it's still early, tech and telecom analyst Andrew Tonner breaks down the most recent rumors regarding Microsoft's Surface encore.

Fool contributor Andrew Tonner has no position in any stocks mentioned. Follow Andrew and all his writing on Twitter at @AndrewTonnerThe Motley Fool recommends and owns shares of Intel. It owns shares of Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.