While waiting for the new 3Dot board (5.03) the 3Dot 4.54 version board is being used for development. Physically the boards are nearly the same. The only major change that affects us is the placement of headers and connectors. On the new board, there are two separate locations to connect I2C devices. So, our devices can route to which is more convenient.
Our current plan is to design everything with the now working 4.54 but, keep in mind and be compatible with the new 5.03 board. Currently, all software tests, breadboarding and testing have been conducted on the 4.54. The goal is the new board will just be plug and play.