Considering Selling My Audi Q7 for a New SUV - Should I Wait or Upgrade Now?

As an Audi Q7 owner considering a new SUV, I'm torn between holding on to my current vehicle or upgrading now. My Q7 has been a reliable companion for years, but its age is starting to show and fuel efficiency has become a concern. Should I wait for the next gen model or take advantage of current deals on newer Audi SUVs?