For a jet this may be close to (but still slightly less than) the minimum drag speed because jets have almost constant thrust at all airspeeds.
This is only true for "pure jets" - and even then only to a first approximation. Fan jets lapse (lose) net thrust with forward speed, the larger the bypass ratio, the greater the thrust lapse with forward speed. The efficiency improvement of higher bypass ratios is large enough to overwhelm the effect of this thrust lapse, so overall cruise efficiency still improves, but it is a major reason why cruise speeds for jet airliners has decreased slightly compared to 50 years ago (and why fighter jets - especially those with supersonic capabilities - use very low bypass engines).