The Neverwinter site has been updated with the news that the servers will be undergoing a technology update in the near future. The update will include bringing all players into a single shard to enhance the community and PvP opportunities.
Why is Cryptic merging the shards?
We believe that having all players in a single game world provides for the best user experience because it allows players to play, interact and trade with others without having to worry about which shard they are on. Launching a new online game is an exciting time, where new hardware and new software meet a large user population for the first time. Hence, we decided to launch Neverwinter with three shards, to reduce the risk of players having a negative experience due to servers overloading. Since launch we have continued to optimize our software and hardware so that we can merge the three shards into a single seamless game world.
Read the FAQ on the Neverwinter site.