We currently are in the process of taking action against a subset of accounts that were confirmed to have utilized exploits that affected the game balance or economy. These accounts may be banned, temporarily or permanently, depending on the severity of exploit utilization. Anyone who is affected by this will receive notification via email. [...] Thank you for your patience and support while we continue to do everything in our power to ensure that Neverwinter remains a fair and balanced game experience.The post also encourages anyone banned unfairly to contact customer support for resolution. A followup post by a Cryptic moderator from last night tells players that "there are no plans for another wipe at this time." And a message on the Neverwinter's German-language Facebook page suggests that the Neverwinter Gateway has been taken offline while the issue is investigated. We'll keep you posted as the story develops.
[Thanks to Dan, J, Ehra, David, Dixa, Mike, xpac, Jan, and Zaph for the tips!]