Check it in our forums, soon it will be installed automatically by all our installers. Starting from next N4 update Aquarius will support N4 too.
NOTE: Officially you have 2 license slots for all our products. Anyway starting from today we are increasing the number of slots. For commercial products, you'll have FIVE slots (following the apple model). We hope it is enough for your daily operations, licenses movement, session replication at home or in laptop, etc.