I think some of the people in this post saying that clarifying upgrade instructions is a bad idea should consider that not everyone here has their technical knowledge.
Threads is a paid-for product and a confusing upgrade process is going to turn people off. I like to be patronised when I install or upgrade something because my skills/knowledge with software installation ends with Threads and a few other simpler scripts.
For the future of this product I think it is essential that some of the upgrade and installation instructions are provided when the product is released and for all levels of knowledge.
