It does seem arduino teams goal is to bring new products to market but I feel the support/software for these new devices lags behind. I have had a Duo since it's launch but it has hardly been used. Initially this was because I was not geared up for 3.3V and the documentation/IDE was beta, several months down the line and the IDE is still beta and it seems the takeup/support is not what was (I) hoped. I have since found the Teensy3.1 that seems to be what the Duo could have been.
Maybe we should dust off the old 8051 and it's derivatives and drag them into the 21st century with standardized design/pin outs and IDE.