The new Starship will not have heat shields around the engines. The new engines can withstand the higher temperatures without protection.

SpaceX has a 50-50 chance of getting refueling working in time for an unmanned launch to Mars at the end of 2026. They will then go with larger and larger mission every 26 months.

SpaceX plans to make about 1000 Starships every year and to make 5000 Starlink satellites per year. The number of Starlink satellites could increase to 10,000 per year.