QuEra promised 1,000 error-corrected logical qubits by 2029, skipping all intermediate hardware releases.

Raw qubit counts mislead; the 2029 machine needs halved hardware error rates — a drop QuEra’s roadmap does not specify how to achieve.

No hardware ships before 2028; the required error rate for the 2029 successor is undisclosed.

Sources: Ars Technica