I haven't packaged 2.7 due to lack of time (as it wasn't out when I packaged it), and because the reason I packaged it was so that I could use scikits.odes (
https://pypi.python.org/pypi/scikits.odes), which currently uses 2.6.2 (though updating scikits.odes to use 2.7 shouldn't be hard). I was planning on pulling out the sundials matlab interface and making it compatible with octave-forge (which seems to be the way the octave community and debian's octave team package stuff), but I haven't had time. Also, there was a ABI break between 2.5 and 2.6 which upstream ignored, and I was waiting for them to get back to me. I do plan on finishing it, but was going to wait till after the freeze to push it to the archive, as it involved dropping octave-sundials, which now seems like a moot point given upstream's decision to drop the matlab interface from the release.
I've pushed the latest stuff to
https://github.com/aragilar/debian-packaging-sundials (which I uploaded originally as someone was trying to install sundials to use scikits.odes), but it is a mess. Also, it looks like upstream has finally made it easy to download tarballs (it used to require providing an email), so the watch file from my work is no longer valid.