Well i wonder is Teensy 3.0 the next major arduino release (based on its specs), it seams quite something special
http://www.kickstarter.com/projects/paulstoffregen/teensy-30-32-bit-arm-cortex-m4-usable-in-arduino-a
Or will there be a wifi enabled next major board?.
You mean this but as part of a board and not a shield?
yeah well we see that the arm processors these days have usb support in arduino (leonev) but hm i see also chips like http://www.atmel.com/products/microcontrollers/wireless/default.aspx some atmel chips have it inside.