I can't really say if they ever have posted things from the catalogs since I don't tend to read either, but it certainly is something I think they would do.
They do. I've seen them do it for a bunch of the Trek books.
The only reason I posted the stuff to Memory Beta was because I figured some preliminary information was better than no information. But then I realized that alot of people probably don't realize that the stuff from the catalog isn't final, so I took it down.
As for posting it here, I figured as long as I made sure the point out what Marco and co. have said about it, it would probably be ok. I also thought everyone else would enjoy at least being able to get some vague ideas of what to expect from these books.