That would really be a surprising turn of events, and what a turn it would be! Imagine if the next generation of browsers supported XSLT 3.0—entire cabinets full of blog engines, static page generators, and much more could be rewritten. I support this. XSLT is one of those technologies that is too good to disappear. On the contrary, while some JavaScript frameworks have already turned to dust, I can still rely on my XML toolchains to work in 40 years' time.