Jaxbot at XDA-Developers forums is working hard on a Windows Phone 7 Series theme to bring the Metro UI over to Windows Mobile 6.5.x (aka Windows Phone Starter) based devices. The said UI is still in very early stages of development, and has some bugs as can be expected but it promises a lot. Here is how it currently looks like running on a HTC HD2.
Last month, we informed you about an emulation software named Haret which enabled Windows phones to run Android OS side by side with Windows Mobile 6.x. This solution required booting into Windows Mobile first, before you could run Android using Haret. But now, some folks at XDA-Developers have released a new software/tool named Gen.Y DualBOOT which enables Windows phone users to dual boot Windows Mobile and Android OS on the very same handset.