Here is the current official list of races that will be permitted in an Oramian campaign:

Standard Races:

Human
Elf
Half-elf
Dwarf
Gnome
Twyll (Halfling)

Other Races:

Hadozee (from Stormwrack)
Mul (Half-dwarf modified from the Dark Sun setting)
Planetouched (Aasimar and Tieflings)
Raptoran (from Races of the Wild)
Winged Folk (as Avariel in the Forgotten Realms setting, but not an elven subrace)

With the possible additions of:

Aarakocra
Half-dragons/Dragonborn (If I can get them to a LA of +0)
Irda (from the Dragonlance setting)
Niomus (from Mythic Races by Fantasy Flight Games)
Phanatons (from the Mystara setting)

I am also considering the addition of an original race which would be useful on windriggers:

Arachnids (Humanoid spiderfolk with 4 arms)

I have decided against the Kalashtar since I don't have a copy of either the Psionics handbook or any of the Eberron books. Thanks for the suggestion, though, Artifact. I have also decided against the Karsites for now...pretty much the same reasons. I also think I have decided against the Shifters. I wanted a shapeshifting race though, so I think I'm gonna go with a race similar to the Irda from Dragonlance.

I may include a list of optional races for those who have the necessary books. This list would include:

Kalashtar (from Eberron - recommended by Artifact)
Karsites (from Tome of Magic - recommended by Mr. Kite)
Shifters (from Eberron - recommended by Arifact)

If I get the necessary books later, I may update these to official races.

Half-orcs and half-ogres are not allowed since, on Oramis, humanoids (orcs, kobolds, etc.) are not true races... they are people who have been horribly changed and twisted by the evil mages of the enemy. A kobold, for instance, is actually a halfling that has been irrevocably altered. Orcs were once elves, and so on.