Last night I had a chance to download the Dynamics CRM 2013 mobile client app (MoCA) for iPad (3rd gen) from App Store (I wish I can get a surface to play with).
Some features that might be lacking from this release are the phone call button on contact record does not have any selection on what kind of phone call application that can be used (Skype or Lync). From my view, Lync will be more beneficial for corporate/business perspective. And the Email button as well, it does not automatically assign my email address that I used for login into MoCA, instead it is using the default settings email. It makes the process to track the email harder when it is used in conjunction with Outlook client and Web-based application.
Service functionality seems not 100% working properly on my instance, as I could not change the status of certain service record.
Hopefully Microsoft roll-up these update soon.