No, you must get your visa stamped and commence working before you can 'transfer' the H1B. But you can apply for a new H1B with the new employer and, assuming your first employer was not cap-exempt, you've already been counted against the cap.
No, you must get your visa stamped and commence working before you can 'transfer' the H1B. But you can apply for a new H1B with the new employer and, assuming your first employer was not cap-exempt, you've already been counted against the cap.