10.1.1, 10.1.2, 10.1.3, 10.1.4 and 10.1.5 were minor improvements and fixes. So were 10.2.1, 10.2.2 and 10.2.3. And they were all free downloads. I suspect that 10.2.4 will follow this same pattern and if there is a 10.2.5 then I am sure it will be small fixes and changes offered for free...