Sooner than expected? Useful quantum error correction promised for 2028.

Are useful and error-free quantum computers only two years away?

Quantum computing firm QuEra says it plans to make a fault-tolerant quantum computer and offer it to users through the cloud in 2028, which will require a real leap in engineering

QuEra Outlines 2028 Roadmap for 256-Logical-Qubit "Libra" System and Expanded AWS Cloud Partnership - Quantum Computing Report