Using the latest beta, the workaround from the wiki,
\setuppagenumbering[alternative=doublesided]
\setupsectionblock[frontpart][page=no]
\setupsectionblock[bodypart][page=no]
\setupsectionblock[appendix][page=no]
\setupsectionblock[backpart][page=no]
\starttext
\startbodymatter% or backmatter etc.
After this page, there is another empty one.
\stopbodymatter
\stoptext
fails to prevent a blank page at the end. Is there a new way to do this now?
I used to rely on \installpagebreakhandler{last}{}, but this does not seem to work either: it now permits a final page with a page number.
Alan