Yes, some of us dropped the GNU/Linux part from Debian stuff in some parts since the introduction of GNU/kFreeBSD in a stable release. Earlier announcements talked about "Debian GNU/Linux", whereas this changed with the release of squeeze:
This started shortly (Aug 6) after I more or less started a discussion on the German IRC channel (Aug 3). This was then also retrofitted on 5.0 update announcements:
"Updated Debian 5.0: 5.0.9 released"
I think it is important for a project that runs on multiple kernels to not mention one kernel on the homepage and not the others. The removal of Linux from various places is correct in the Debian case.