Why freedesktop says that xfce4 hasn't development framework...?

[Xan]

Hi,

I just want to know why in freedesktop webpage appears that xfce4 hasn't 
development framework (see http://www.freedesktop.org/Main/Desktops) and in 
xfce4 page appears that it has (see 
http://xfce.org/index.php?page=overview&lang=en features).

Who are saying the truth?
Is it a bug of one of these pages?

Thanks,
Xan.

PS: I'm a desktop user.