The Fuji GFX preorders will start on January 19. And this should be the US pricing:
The FX50s body with EVF will be priced $6,499 (not the supercool tilting EVF but the normal one)
Fujinon GF 32-64mm f/4 lens $2,299
Fujinon GF 63mm f/2.8 lens $1,499
Fujinon GF 120mm f/4 macro lens $2,599
via GFX facebook group via PhotoRumors