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Found some interesting text strings in gw.dat:

Roasted to a golden brown, these look tasty! A beverage that redefines "spiked" eggnog. An ornate, delicate, handcrafted snowflake. Ice Cliff Chasms [null] Oversized Tonic Warning Notice! While in this area, certain tonics will convert you into a more festive appearance. Affected tonics are: Abominable,  Automatonic, Phantasmal, and Sinister Automatonic. Notice! While in this area, certain tonics will convert you into a more festive appearance. Affected tonics are: Abominable, Automatonic, Phantasmal, and Sinister Automatonic. You are now level %num1%! You gained %num2% attribute points! 

Three new consumables? A special effect for some part of Ice Cliff Chasms? And... an updated level-up notification. —Dr Ishmael Diablo the chicken.gif 23:50, 18 December 2008 (UTC)

The notification looks the same >_>. Cress Arvein Cress sig.JPG 00:14, 19 December 2008 (UTC)
Maybe they finally fixed the You are now level 20! You gained 5 attribute points! Bug.--Łô√ë Gigathrash sig G.jpgîğá†ħŕášħ 00:20, 19 December 2008 (UTC)
Giga wins - the old message had "5" where this one has the variable "%num2%". —Dr Ishmael Diablo the chicken.gif 00:24, 19 December 2008 (UTC)
They're quest items. Ho hum. Felix Omni Signature.png 20:49, 19 December 2008 (UTC)