While we're unlikely to see new Windows Phones being launched by Sony anytime soon, an early Sony Ericsson prototype handset running Microsoft's mobile OS is now available to purchase on eBay.
Olixar Light Bulb: A Bluetooth enabled speaker that also illuminates the room
Windows 10 for phones news
Windows 10 for phones
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Amazon Echo Review: "Alexa, why are you so cool and frustrating at the same time?"
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Our coverage of the Mobile World Conference 2015
The YotaPhone 2 is probably the most interesting phone since the iPhone 3G - Review
While its rivals vie for superiority in the smartphone space with ever more powerful quad-core processors, Sony says that we shouldn't expect such devices from them until 2013 at the earliest.
Sony today announced the latest range of Xperia NXT series handsets earlier today at the MWC conference in Barcelona. The new additions to the series are the Xperia P and the Xperia U.