As per: 1.4.5.6 Server Update Rollout
Yesterday 1.4.5.6 testing has commenced with the PvP dimension. One of the final dimensions to be updated. As part of this testing we are running PvP over on the EU server, so expect your ping to be different. We will return it the US server once testing is over.
For any new issues introduced, you can post about them below. The aim is to fix the majority of them before testing is completed.
The duel mode is expected to be updated and re-enabled at the tail end of this testing since it is essentially running the same changes.