The new PreRelease Compiled Rules 2.3 has the most recent list of 4E deities in the back.
Asmodeus - Deceit, Devils
Avandra - Luck, Chance, Halflings
Bahamut - Honor, Justice, Good Dragons, Dragonborn
Bane - War, Tyranny
Corellon - Magic, Eladrin, Music
Erathis - Civilization, Order
Gruumsh - Orcs, Slaughter
Ioun - Magic, Knowledge
Kord - Strength, Storms
Lolth - Drow, Treachery, New Moon
Melora - Nature
Moradin - Crafting, Dwarves
Pelor - Sun, Humans, Agriculture
Raven Queen - Death, the Dead, Winter, Destiny, Shadar-Kai
Sehanine - Moon, Forest, Elves, Love?, Full Moon
Tiamat - Vengeance, Evil Dragons, Dragonborn
Torog - ?, Evil?
Vecna - Secrets, Undead
Zehir -Night
Speculative
Io (dead) Progenitor of dragon Gods Bahamut and
Tiamat
The +1 God Speculative
Ocrus
Tharizdun Evil, Demons
Bel