For the first time in several years, 2015 looks set to play host to the launch of numerous compelling new mobile operating systems, at least one of which could have a chance of stealing some market share from the reigning champions Android and iOS. Of course, neither of these will be sweating just yet, but we expect some droplets to be forming on a few foreheads at Microsoft. By our reckoning, there are five interesting challengers expected...

Due to what we suppose are a number a coincidences, it so happens that this year will see all three major platforms go through a major update, whether we're talking about a design overhaul, more functionality, or both. Indeed, all three -- Android with L, iOS with version 8, and Windows Phone with 8.1 Cyan -- are set to become the norm before the year is out. Usually, we'd argue that such a comparison is unfair and premature both, as Microsoft...