Any other ext-packs under development?

[chingasos]

Aside from Oracle's current extension,
Oracle_VM_VirtualBox_Extension_Pack-4.0.2-69518.vbox-extpack

does anyone know of any other extensions being developed by anyone?
And if people are working on extensions, what type of functionality is being worked on?
Also, is there a forum or discussion group in this area?
Maybe even a new sub-forum could be created here just for extension packs?

[Technologov]

No development is taking place to my knowledge.

Possible future extpacks may include some remote protocols, such as VNC or SPICE.