Release 2.5 is released and available for download.
2.5 is a direct successor of 2.1 so we recommend to follow as soon as possible/reasonable.
Please check the change log, that you find in the DevZone. The editor now is delivered to run in "embedded mode" - this has one implication into your current environment, you need to copy all project files form one directory to the next. The info is contained in the chang log.
"Marketing material" on 2.5 will follow in the next days.