The following changes will be made to MainWP Extension licensing on August 1 2014:
Any Extension purchased before August 1, 2014 will maintain its lifetime support and updates license, everything stays the same as it has been and you do not need to do anything to keep your Lifetime License.
Any Extension purchased after August 1, 2014 will be set on a 1 year support and update license.
The 1 year licensing only affects updates and support you will be able to continue to use the Extension forever. Once your 1 year license expires you would need to repurchase the Extension to continue to receive updates and support.
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