I was there and have spoken with a lot of people about XNA. XNA is officially dead on all MS platforms. They did promise some tools to help make DirectX development easier and they did suggest SharpDX a lot (and MonoGame a few times) as an alternative. I almost fought with a Microsoft DirectX guy on one occasion over the matter, but I can unfortunately confirm that Microsoft decided against keeping XNA as an option for Windows 8 and Windows Phone 8.
After being downloaded almost 18000 times, after being featured in 10s of countries worldwide (currently featured in 9), after winning 1st place in competitions, after receiving a staggering 92% rating from more than 310 gamers worldwide in less than 2 months, I think it's time for Hot Apps to take a look at MonsterUp Adventures, the awesome sequel to the multi-award winning Windows Phone smash hit MonsterUp More info about the game here, including videos and screenshots: http://www.kariosgames.com/games/monsterup-adventures/ You can get the game here: http://windowsphone.com/s?appid=78e95c7a-5dd0-4411-abaa-b63854cee439