An early development build of Windows Phone Tango is up for sale on Facebook.
The build has been flashed onto a HTC HD7 device and offered out to potential buyers. The build string reads 7.10.8200.DEV.20110726-1300, indicating that it’s a recent post Windows Phone Mango build from late July. WPCentral notes that the seller is offering the device with a variety of different builds:
“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 ”
Tango is believed to be an interim release between Windows Phone 7.5 “Mango” and the next-generation of Windows Phone, currently codenamed “Apollo.” Windows Phone build 7.10.8200 was recently discovered in server side logs of a Windows Phone application. A screenshot, believed to be a Tango build, also leaked last week and demonstrated a new device search feature for Windows Phones.
Microsoft recently finalised Windows Phone 7.5 “Mango” and is expected to ship the update in September alongside a number of new Windows Phone 7.5 devices.