beryl is still hawt,but everybody can enable composition and have transparent windows on xfce4, by editing xorg.conf...
What makes this jump to newer versions of packages is that with the older vector linux, the user couldnt use ALOT of applications (not only beryl) that used a newer gcc, a newer xorg, e newer everything, packages that were long upgraded on major distros and still old on vector.
The upgrade will open the doors to many applications and will boost vl's popularity. (hey, for example you can't use the latest version of skype with vl 5.8 std,because it needs a newer glibc)
In the Release post at DW you should mention beryl if you want,but should focus on the upgrades of major packages (finally an upgrade to catch up with ubuntu ,suse , fedora and the rest of the long list which had upgraded long before vl)
and yeah,the switching to linux windows user would definatelly want to see beryl. No matter what.