Uhm, those four boards was from the previous batch. Datakompaniet are supposed to receive a couple of more boards once Gunne gets the next batch the 20th...
Also, at the moment there's been at least as many G4-XE combos shipped as there was G3-SE boards (as far as I can tell, at least), and there's also been sold some XE boards with G3 CPU (it's a really excellent CPU, even if it lacks altivec. It's faster on normal operations... And tolerates more overclocking without expensive cooling).