What if I purchased the Higg FSLM before the launch of the new CAF, which CAF version will I then complete?

When you start filling out the Higg FSLM before the launch of the new CAF, then you are completing the old CAF assessment within 6 months from the launch date. If you are starting the Higg FSLM after the launch date of the new CAF, then you are completing the new CAF assessment. The date of purchase of the Higg FSLM is irrelevant.