It was a tale of two tablet families yesterday, as Nokia unveiled its first iPad rival. It’s a $499 tablet running the Windows RT 8.1 software, and is called the Lumia 2520, with plans to go on sale in the US, UK and Finland this side of Christmas. The 10.1-inch device is pitched squarely against Apple’s full-sized iPads, then, rather than cheaper Android models. Nokia Music and its Mix Radio feature is preloaded too – this’ll be one of the new devices that VP of entertainment Jyrki Rosenberg couldn’t tell us about in yesterday’s interview. There was also some interesting Windows Phone app news from the Nokia World conference yesterday morning: the platform is finally getting social apps Instagram and Vine, as well as Vyclone Pro. There was a strong sense of optimism around Nokia’s hardware and services bubbling out of the event, although the elephant in the room is the upcoming acquisition by Microsoft, with no indication yet about what this means for the long-term future of the 2520 tablet and the Lumia brand.