We discuss the effect of the recent change of Vus​ by three standard
deviations on the standard model predictions for neutron beta decay
observables. We also discuss the effect the experimental error bars of Vus​ have on such predictions. Refined precision tests of the standard model
will be made by a combined effort to improve measurements in neutron beta decay
and in strangeness-changing decays. By itself the former will yield very
precise measurements of Vud​ and make also very precise predictions for
Vus​