We first came across Tversity earlier this year at IPTV World Forum when it began to show the underlying technology of its AirFlinger, at the time quite a way short of a finished product. At IBC this week, just 6 months later this looks like a genuine contender to become the AirPlay for non-Apple devices, at least where a pay TV home has a set top to drive it. The interface is now slick in redirecting content from one screen to another, and back again, with multiple devices, an iPad, an Android Tablet and a smart phone, each jumping in and taking over each other’s session (the system listens the to the last device which streams to it) and you…