They will be working in the final released version. The final release will. Some areas of the beta release do not. Some keyboard shortcuts for deleting items are not functional in the beta. Support for the Delete key and other key combinations will be added in the final release.
Help is incomplete in the beta release.
If you insert an OLE object in a mail message, you may not be able to save it correctly. You will be able to view these items in messages sent to you. Printing capabilities are very limited in the beta release. This will be fixed in the final release. This is not working in the beta release.