Screenshot renderings have floated up to the surface of the Internet, which are said to have been created by a former Nokia designer suggesting that the company may have been (at some time) considering its own custom Windows Phone interface. The concept sports free-form bubbles versus Microsoft's Metro-style tiles, with an overall theme geared towards female users.
Pocketnow notes that the designer had worked as a senior member of Nokia's research and development team, but has since transitioned to work on Accenture projects last summer. At the moment it's unclear whether the renderings actually represent any form of a final product, or concept that Nokia was considering. Nokia's partnership with Microsoft is also said to provide flexibility for Nokia to mess around with the UI and diverge from the consistent experience that Microsoft demands from other Windows Phone makers.
Microsoft have since denied knowledge of the renderings, and Nokia claims the renderings are "purely [the designer's] own personal design explorations", and were never included in official projects. What do you think of the renderings?