There are free upgrades for the life of the software
you use whatever version you think you would like to use and if you feel like upgrading because we added some new toy it is free! If the price of the software goes up and we add more it is still free
I think you see how it works
The only thing that could happen in the future is a pay version of Lcam where you Will have to have a license to unlock some of the advanced features... But this is going to be down the road and what is there now will still be free
Hope that helps
Brian