Hi,
Coronium Core 2.2.0 will be released in the next couple of days (pending some screencast updates).
There have been some changes to the client-side responses for both the users.login and users.create methods. If you have any apps that you plan on releasing in the next couple of days, I recommend waiting until updating to the latest version to make sure your app handles the new responses correctly.
The Users API updates provide for more detailed handling of users on login, especially in regards to email confirmations.
In addition, email confirmations can now be resent if needed. There are also some minor webmin fixes in regards to documentation links.
-dev