Here is what is currently planned to go live during the upcoming maintenance. As always, this is what is just planned, and it may or may not happen as sometimes issues come up at the last moment.
Winter Event begins
Log out timer added - 10 sec. Only if you are not in-town (updated)
Rain has been added to some areas, other weather effects will be added to other areas later
New texture for the Rank 5 bow
Two kinds of Rank 2 armor added
Luna chips added (similar to a force chip combined with a soul chip)
3D images of Gale of Axe added
Inventory Rupee limit increased
Item tool tips updated
Feather of Return has time adjusted from 20 min to 4 hours
Auction House NPCs added (this will enable auction system)