To see the new furniture, Go to your treehouse.
Click on The Saw and Hammer icon in the bottom right corner of your treehouse.
Then Click on the "House&Tree" Catalog.
Here is the pictures from the catalog: (Thanks Penguitt from Pandanda Shack :3)
As you can see, there is a bunch of glitches Pandanda needs to work out, most of the color choices display as red, and are not available (ONLY IN GOOGLE CHROME ARE THEY ALL RED, IN OTHER BROWSERS THEY SHOW DIFFERENT COLORS! :D Thanks @LisianaPD) Along with that, there is an old Zing item in the catalog - the light ball thing xD. The price of it displays as -1, but instead of buying it in exchange for coins it GIVES you a coin if you buy it.
Lol xD Pretty neat glitch, Pandanda. Just buy a bunch of these lights and you have yourself a lot of coins. Pandanda will probably fix it in a few hours though, so go quickly :3