We're aware not all players received the updated Conquest caps with today's maintenance, and we're working to resolve the issue as soon as possible.
To help everyone keep up with the upcoming system
in 5.1 that will allow you to upgrade your Conquest gear with Conquest Points, a hotfix is being implemented very soon that will raise the Conquest Point caps:
At 1500 rating, the Arena Conquest Cap will now be 1800 (up from 1350), while the Rated Battleground Conquest cap will be 2200 (up from 1650). As always, when your rating increases, so will your cap.