Yesterday I got an e-mail from Werner Koch (gnupg upstream) about the status of gnupg2 in etch since he somehow thought me to be involved in its packaging.
I am not involved at all but have nevertheless wasted a little time on
giving gnupg2 1.9.91 a shot. Initial packages can be found here:
deb http://www.bebt.de/debian/ sid gnupg2
deb-src http://www.bebt.de/debian/ sid gnupg2
I have not tested them at all, except for checking installability and for comparing
filelists, however they should spare the maintainer a nontrivial amount of
time, as the packaging is a lot less crufty than before. Check the
changes file.