No .debs for GIMP 2.3.17 this time
As you might already know GIMP 2.3.17 has some serious bugs which make them rather unusable. That is why we don’t provide debian / ubuntu-packages (.debs) this time. Nevertheless you could give it a try by compiling it from source yourself.
These bugs seem to be fixed in the latest version from svn, so 2.3.18 will follow pretty soon as also stated on gimp.org. We’ll inform you when new versions are being released.