We are releasing internal build versions, so that our clients can test wheteher the issues they have reported are fixed, that's why internal builds are for testing purposes only, as they haven't undergone the internal testing that we do for official releases. You can upgrade a copy
of your project and check if the issues still reproduce, so that you, or your client respectively will have timely information about the status of the reported issue. However, you can wait till the next week when we have scheduled our Sp1 release, which will be officially supported, and you can upgrade your live site to it.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items