  New data on the $J/\psi$ suppression both in proton-nucleus and in lead-lead
interactions have been presented recently by the NA50 collaboration. We show
that these data, together with the final ones on sulfur-uranium interactions,
can be described in the framework of the comovers interaction model with a
unique set of three parameters : the nuclear absorption cross-section, the
comovers interaction cross-section and a single (rescaled) absolute
normalization. Expectations for $J/\psi$ suppression at RHIC are also
discussed.
