2014, is actually just 2013 reskinned.
The leaderboard is now just one black box, gaps between each row. This is the earliest version of what we have in 2015.
The inventory (referred as Stuff prior to 2013) is now also modernized, with no cool effect or gradients, just tools and the arrow to open up overflowing items.
The game menu is reskinned, with grey and blue buttons.
2014 is cool and all, but I think they could've done more with it.