Nogami-san just posted this on VSNET:
Dear colleagues,
We would like to call for dense monitoring of SS Cyg for coming tens of days.
X-ray observations by the new X-ray telescope XRISM (PI: Manabu Ishida) will
be scheduled based on optical detection of the next outburst. The SS Cyg
observation window with XRISM will open on April 14. We would be
thankful, if the VSNET observers would monitor SS Cyg more than usual and
timely report outburst detection, say brighter than V=11.0.
Best regards,
Daisaku Nogami