Today I have been given the opportunity to try Luminar 4 which will be released in a few days time. Well, all I can say is WOW! The Sky Enhancer, Landscape Enhancer, and AI Structure are great tools.
With a revamp of the workflow area, you can easily create stunning images.
If you have Lumiar 3 is it worth the upgrade?.. in my opinion, yes. The new enhancements to the software, especially the Sky Replacement feature is worthy of the money alone. Not everyone will need the sky replacement feature, but if you like playing around with your images and getting creative, you are going to fall in love with this feature.
For a more detailed report on Luminar 4, this blog post is well worth a read..