I live in the EU so I can only really talk about the MacOS improvements.
I think Apple Intelligence is excellent. The Calendar location suggestions are phenomenal, for example. It’s filling in the blanks for me! I travel a lot, every week, and it’s guessing well which hotels and venues I stay at.
Also, the summaries from Reminders are great for reviewing every day, and to give me a little kick each day (as I’m middle aged I tend to forget things so this is a great thing for me).
Email composition is less stressful. Now, I’m clicking more and more often on the automated reply (it’s improving using machine learning I can tell) and refining it, rather than starting a new email from scratch.
I’m really happy with their careful and thoughtful use of AI and believe it’s already making a solid difference in my day to day workflow.
I’m still using Pro Writing Aid to proof my documents, but I’m sure that will come along good too.
Have other people been finding Apple Intelligence features useful?