Was looking on forums and see EU got their Season 1 WvW meta achievement chests. Pretty underwhelming if you ask me. You can expect something like:
8 greens
3 yellows
1 taste of liquid wxp (10k)
mini dolyak
100 dragonite ore
100 empyreal fragments
5 scrolls of knowledge
9 tomes of knowledge
500 luck
In other words, the gold and exp equivalent of about what you would expect from 3-4 hours playing wvw. Look at the bright side, if there is a season 2, all the pve'ers are not going to waste their time for this crap.