New respurce type file extensions

Do we know for certain what the file extensions for the new resource types are?

0x3FF = wbm?
0x400 = fnt?
0x402 = gui?
0x403 = sql?
0x404 = pvr? pvrz?
0x405 = pixel shader of some sort? glsl?

Which of these can be dumped into an override directory and actually be used by the engine?