You'll need to write a new board-support-header for this new board, but that isn't too hard. Otherwise, this is the best dev kit for OpenTag on CC430, it is just a bit new so the board-support-header isn't yet in the source tree.
https://estore.ti.com/MSP-EXPCC430RF4-CC430-Sub-GHz-RF-Experimenters-Board-for-433MHz-P4367.aspx