It's unusual to read so much into a leaked T-Mobile accessory road map.  However, with this road map, we might have a better idea when T-Mobile will have Windows Phone 7 devices available.

TmoNews has obtained an accessory listing with availability dates that show items such as a HD7 Charge Shell coming on November 15, 2010 or a HTC HD7 Leather Sleeve (black) arriving November 1, 2010.

There are two schools of thought on this. One has the accessories coming after the actual device hits the market.  This would have the HD7 landing on shelves late October.  The other has the device and accessories landing at the same time which puts the Windows Phone 7 device on shelves early November.

Either way, that holiday season target date that was set by Microsoft way back in February is still looking really good.