New packet found

Old intwars announce packet:
4C 00 00 00 00 59 00 00 00 00 00 00 00 00 01 00 00 00
/\ Header           /\ Welcome to Sm Rift            /\ MapId

10 00 00 00 01 00 00 00 05 00 00 00 00 00 00 00
/\
Header      /\MapId?    /\Welcome to Sm Rift?