If there are any special considerations to be taken when upgrading to a specific version of the plugin they will be noted here.
The major change this version is in how you browse projects. The existing
Tools > Projects page was renamed to
Tools > Project Tree. A new page was added to take
it's place that provides a, we hope, more unified and Rock-like view of your projects. Because your users may not know how to immedietly find their existing projects you may want to be sure they know they can go to the
Tools > Project Tree page to find them until they are used to the new look.
Version 1.5 added a couple new features to the e-mail system. E-mails can now include the attributes of the project (similar functionality to how Workflow Notification e-mails work) and have had the templates updated. You may want to check your own System Email templates against the stock templates to be sure you are using the latest version.
Support for allowing users to reply to an e-mail to leave a comment on the project has been added. This requires some configuration to enable so be sure to check out the configuration section on that.