Here is the list of new features for version 1.1 (submitted to Apple on Feb 16th, 2011):
What's new in version 1.1:
- Added ability to encrypt to multiple public keys.
- Added auto-decrypt from clipboard option when application activates.
- Added support for bzip2 compression.
- Added encryption compression settings.
- Added support for decoding MIME encoded messages (compatibility with PGP's Outlook plugin).
- Added ability to view attachments within MIME encoded messages.
- Added option to Clear text on Encryption screen when the app is exited/switched.
- Fixed decryption key search algorithm when a message contains multiple sub-key ids.