MagiWOL is IPv6 ready.
If you are on network that supports ONLY IPv6, you will really appreciate it since most of Wake-on-LAN programs are unable to work in that scenario.
If you are on dual stack (Windows Vista and newer) and behind your IPv4 home router, this change does not matter much now. Once your home IP pool gets exhausted, you will need it (there is only 4M addresses). Consider this update as future-proofing...