hangarace wrote:If I order a new board will it come plug and play?
As far as the hardware is concerned, the answer is a qualified yes. Be careful about the power plug coming into the board. If you have a laptop "brick" power supply, then hopefully they will ship the board with an appropriate connector for the power supply. Do NOT use your existing 4-pin power connector in the Rev F 6-pin socket.
It's possible to physically insert it, but it's wired wrong and will not work. If you have an ATX style power supply, it probably has a compatible 6-pin connector available.
The Rev F board has screw terminals for the heated bed instead of a plug, but that's no difficulty; if you have a heated bed, just cut off the existing plug and strip the ends of the wires for insertion into the screw terminals. You might need to adjust the placement of a jumper regarding the Z endstop, but other than that the hardware is totally compatible.
For the firmware, the chances are 50-50 that what you get will work out of the box. There have been many changes to the design of both the hardware and the software over the last 4 years, and I haven't seen a stellar record of Printrbot shipping the boards with firmware installed that matches the purchaser's hardware. But there are many pre-compiled hex files available for you to flash into the board if what you receive doesn't work. And you can always go back one more step and compile Marlin for your specific printer. See the links in my answer of 10 December.