The majority of problems we've seen come in the form of existing API calls that have some slightly new/different behavior. They seem to do a decent job with ve

The majority of problems we've seen come in the form of existing API calls that have some slightly new/different behavior. They seem to do a decent job with versioning major changes. But our App breaks on iOS5 because of subtle changes. Point being...there are far too many moving parts to expect them to get everything right in a beta release.