It is not an error, and 38 was also the max level for the KR and JP betas.
Knoxxer said the cap will remain at 38, and there will some "cool" events going on for last CBT to grab player interest. They are concentrating on OBT and making sure all the higher level content is ready for that time.
But Im already 38...
Guess i'll be farming for gold gear...
Wish I knew this before I farmed up multiple repeatable quests :P
Now we`ll concentrate on those " cool things", wonder what they are. :)
THANK GOD it's 38 still... I now have time to level another character or two during this beta. xD
I was always sticking with my sorc since CB2, lol.