This is an often requested feature. I know I've requested it before and I'm pretty sure I wasn't the first.
I think at the time Ben said he and Mena were considering a bunch of "administrative" features for the next release. As it turns out (I'm guessing here) a lot of the recent development effort went into adding MySQL support, which I think was a smart move on their part.
I can only speculate about the availiblity of administrative features in future releases, but I can offer you this, a comment Mena made on Blogroots:
http://www.blogroots.com/comments.blog/56#324She mentions that Movable Type won't be targeted for the corporate sector. To me this
suggests that there won't be a lot of development effort put into administrative features. Obviously, this is not a quote of what she said, just my personal opinion; an inference based on things I've read.
Frankly, I don't think the needs of the corporate sector are that much different from those of the average blog author. Right now, the only difference in need that I can think of is that the corporate customers (IT managers) would need an easy way to tie MT into their own authentication systems. More granualrity for permissions, I think, is needed by everyone, not just corporate customers. (Hmmm, perhaps I've just contradicted myself?)
Sheesh..I feel like the Movable Type equivalent of one of those Apple rumor mongers. I hope I haven't started any rumors. This was just specualtion.
My hope is that this post (and my question from yesterday, looking for the MT "features in development" page), will lead to the publication of a product roadmap. I have some other hopes too, but I'll leave it at that.
Cheers!