Honestly, only you can answer that. Is there something you're doing with your current machine that it struggles to keep up with? Do you use your Studio to earn income? If the answer to those questions is "no", then maybe you're considering upgrading for no other reason than you simply want the latest and greatest. Is that worth (maybe) approximately $1000 to you?
You are absolutely correct. It is based on my needs.
I was also interested in seeing what other M1 owners might be thinking regarding upgrading should an announcement be made.