I went Data mining again.
So, Gingerbread Houses and people seem to be a big part of this years event, there are ingredients to make them as well.
We got a reason for why the WOK uniforms got an update, we're getting Variants for the Winter event
Item_Pack_Costume_Winter_2013_Twok_Captain_Vest.wtex
Item_Pack_Costume_Winter_2013_Twok_Engineering_Vest.wtex
Item_Pack_Costume_Winter_2013_Twok_Excusion_Jacket.wtex
The Captain vest is self explanatory
Engineering Vest is probably Scott's Black one
The Excusion (probably a typo of Excursion) jacket, I'm thinking the Away Team jacket they wore to Regula station.
The ship this year is a 'Breen Raider', and if I'm reading this correctly the Cruiser is coming back as well
They will be done through a rep system like the Summer event.
The Raider is most likely the "Plesh Brek" its in the Tribble foundry as a customization ship costume.
Edit: ICONS!