Interestingly, the other day we saw what was thought to be the first screenshot of Windows Phone "Tango", the next iteration of the OS coming after "Mango". Starting with build 8200 and higher, "Tango" is still a bit of a mystery, seeing as "Mango" hasn't even rolled out yet. Yesterday we saw mention of it as a low-cost option for Microsoft.

Now from a Slovakian Facebook page, we have an individual supposedly selling an HD7 with "Tango" on board. That's the same area of the world where we saw the last "Tango" sighting. Translated from the page:

"HTC HD7 16GB (T9292 Schubert) for sale. You can select from three builds of Windows Phone - 7.0.7392, 7.10.7720 (Mango), 7.10.8200 ("Tango"). The first two are stable and functional build, third is dev build (not stable and to continue with official builds you have to flash it using RUUs). Price starts at 150€, you can contact me on my mail which I have on the forums, only through mail, highest price wins, delivery is not included in the price (only express delivery, not post office). In mail, write down which version of the OS you want, RUUs are not included. All accessories, slovak distribution, arrived today :)"

So like the Toshiba TG-01, here's your change to have a one of kind device. Though we'll stick to local sales in the States for now, you know, just in case.

Source: Facebook; Thanks, wictory, for the info!