Should we have an Unimplemented Attribute?

[Gerrit Wichert]

Am 02.02.2011 23:59, schrieb Andrej Mitrovic:
> But what about structs/classes/functions/etc which are partially
> implemented, but still unusable? Marking them with deprecated doesn't
> make sense, as this will likely confuse both the user and the library
> writers. Would it be overkill to introduce a new attribute?
>   
What about     version( comming_soon)   ?  :-)