Thank you for contacting us.
If you currently have a valid support subscription and are currently running on 3.x, you will continue to receive support for the 3.7 SP4 edition through the term of that agreement; however you will not be able to receive support for any 3.x version after your subscription expires or by September 15, 2014, whichever comes first. We strongly recommend that you plan on upgrading to the latest 6.1 version of Sitefinity.
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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