Mandriva and Turbolinux create Manbo-Labs

That's kinda what they're doing.  They're partly consolidating two distros to reduce
duplicated effort so that less work is needed for the same amount of progress at the distro
level.

As most Linux distributors do, Mandriva and TurboLinux both contribute as many changes as
possible upstream. This is just common sense, as it reduces the burden on the distribution's
own maintainers. There are always, however, circumstances where this is not possible.

Adam Williamson
Mandriva

There's still the issue of how exactly to turn upstream projects into distro packages, which
is often not of any concern to the upstream project and distros don't necessarily make the
same choices. If you've got a project with a bunch of optional parts that each have different
dependencies but are developed together and selected in the upstream distribution at compile
time, it can be unclear how to package this for binary distribution. For example, if you've
got a music player that can optionally support a variety of file formats, but needs a
different external library for each and generates a different binary plugin for each, it's
hard to give a good policy for what goes in the music player package and what goes in add-on
packages. It helps if all of the distros form a consensus is there's no distro-specific policy
reason not to match.