The back of the starter kit has a silk (or sticker) like the BRD 2200A Rev.A03 and PCB2200 REV.A04. BRD xxx indicates assembly version and PCB xxx indicates PCB version. Both versions are not identical.
Some starter kits are printed with only PCB xxx. Simplicity Studio also shows the assembly version (BRD xxx). In this case, it feels like the board versions are different, but that's okay.

Please also check the Silicon Labs community site for information.