Apart from the fact that if there was a ready-to-use ProjectG 60x it would be in the Release section, there's no reason for new executables.
1. There's no public encrypter/decrypter for IFF files (and running standard configuration is kind of meh).
2. There's a small problem with the game-server version check, so you won't be able to login.
Just to counter the potential "how dare you say there's no need!!" argument: If someone really needs a newer executable, they're probably able to unpack it by themselves. Otherwise you wouldn't be able to get past the server select anyway.