True, but the core debian development is kinda stalled, like I said 3 releases so far in many years.Firefox and mozilla are having same issues, its quite common actually.Redhat had the same thing happen, they forked into an enterprise pay version and a cutting edge experimental version.
I think at some point many of these will merge, they will have to, so many offshoots right now its mind boggling, none of them really have anything new to offer that cant be done with one of the others,cept maybe gentoo.