Thank you for your interest in helping us test an upcoming major release of MIT App Inventor.
In this release we will be making a major update to the Blocks Editor. A list of changes/features is included below.
If you would like to help us test, go to http://rc.appinventor.mit.edu/. This is a test version of MIT App Inventor that include the new blocks editor. Feel free to either create new project on this site or export your projects from http://ai2.appinventor.mit.edu/ and import them to rc.appinventor.mit.edu.
HOWEVER be aware of two important issues. rc.appinventor.mit.edu is a TEST system. After the test period is over we will wipe out all projects stored on it. ALSO: Projects you create or import cannot be exported and imported to ai2.appinventor.mit.edu at the current time. Once this new blocks editor is on ai2.appinventor.mit.edu you will be able to import your projects. We will also not delete projects from rc.appinventor.mit.edu until they can be imported.
The software storing your projects on rc.appinventor.mit.edu is the same as on ai2.appinventor.mit.edu. However bugs in the new blocks editor may damage projects beyond recovery (we know of no such bugs at the moment, but this is a TEST system).
And now the list of updates!