The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python.
It's capable of doing everything you'd expect a desktop computer to do, from browsing the internet and playing high-definition video, to making spreadsheets, word-processing, and playing games.
Raspberry Pi 3 is performing 10 times faster than that of the Pi 1 and around 50 percent better than that of the Pi 2 according to testers.
Unfortunately not all systems made for Raspberry Pi 2 will run on the new Pi 3. They need to be upgraded with a new kernel. I therefore have to upgrade the systems I distribute. I.e. RaspEX, RaspEX with OpenCPN, RaspAnd and RaspArch. I have now (160312) upgraded all but RaspAnd. RaspEX Build 160307 runs very well on Raspberry Pi 3. You can (of course) also run the new RaspEX system on a "old" Raspberry Pi 2.