In my experience new Siri has been better only marginally. Still tons of I didn’t understand the query responses
So while yes, I would say overall it is much more powerful than it used to be, it still sits in the "every few reasons to use it" bucket for me. I'd sooner just reach for Grok/Chat/Claude
edit: keep in mind this is my experience over several months of beta. I haven't installed the public release yet.