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Decembers OS was Ubuntu 15.10(64-bit) with 8 desktops Lxde, Lubuntu Netbook, Mate, OpenBox, Unity, Xfce and Xubuntu.
Also there was Kubuntu and Ubuntu 15.10(32-bit)
You could also win a BB-8 droid.
I would recomend this is anyone who likes tech and specifically Linux.
Go out and buy it.