They have taken that into account and made this statement in their announcement email as well as online:
“The Starlink Performance Kit is currently capable of download speeds up to 400+ Mbps for fast, reliable connectivity whenever you need it. Starlink is focused on making network enhancements which will enable gigabit speeds starting in the most remote places on Earth with the Performance Kit. Service plan upgrades will be available in 2026. No hardware changes needed.”