I think the Hotwire release is a big step for the Rails ecosystem, it continues along one of Rails key design goals, which is to make common good practices as easy to do as possible and automate repetitive tasks. I kind of think they are going to continue to push forward on how to package client code, I don’t think they see Webpacker in its current form as the final answer. (The most surprising thing to me about the Hotwire release is that it has a zero-config asset pipeline option)
I haven’t gotten much of a chance to use Ruby 3 yet, I’m excited by the performance improvements, and not sold yet on the type system, I suspect the next few releases are going to deal with how the community comes to use types.