Hi Walter,
as far as I'm understanding TDS 1.1, the hierarchy texmf/etex is gone.
Right.
LaTeX package etex.sty under texmf/tex/latex?
In the current (development) TL source, it's in tex/latex/etex.
Nothing else is in that directory.
(I didn't choose it, but it seems workable to me.)
Best,
k