I just got an email from Jonah@Partsbuilt.com. The replacement boards which I have been using/testing for the last few weeks are now available for sale. If you want one I would email Jonah. These are great boards. You will never have to worry about the 12v for the fans as it is a much more rugged power supply protected by a reset-able fuse. I got and email from Jonah and the temp regulation seems to really good even without replacing the downtown board. The dreaded extruder stepper fail is not a problem because you can easily replace the $2 plugin stepper board. As far as I can tell the only difference for an R2 between these boards and the original is that it does not support dual extruders and the hotend heatsink fan is always on. The boards are 100% plug and play, but you may have to move some of the wires that went to the original. The Ramps1.4 boards that is used supports higher current and I replaced the existing x,y steppers with higher current larger faster steppers. All parts on these boards are readily available on eBay, so you never have to worry about electronics failing again.