For those of you who would like to read a single article about the Raspberry Pi 2 that explains all the hardware changes and all the expected software options (such as Ubuntu and the IOT version of Windows 10) as well as some really precise details of the design of the board, I can recommend heading over to ElectronicsWeekly.com. One of their writers, Steve Bush, has put together a really great article summing it all up. And best of all, it was written on a Raspberry Pi 2!