It's going the be the standard Moteino with no LDO and special fuses. No other changes in hardware. VIN and 3v3 pins are connected (both are input).
I have considered adding battery clips but unfortunately the different holders I tried for this project have very different spacing and tabs, also others might consider using different types of batteries. So ... I decided to just use the same Moteino and maybe if there's demand, make another battery adapter shield for different holder options. But honestly its so easy to just take a small proto board and solder the holder anywhere, then attach it to the Moteino on the 0.1" spaced header (GND, VIN).