I don't know since when this is the case, but the description of kdenetwork says "KDE network apps: kmail, kppp, knode..." but kmail and knode are now moved to kdepim. I suppose this will confuse users as it did confuse me when I tried to get kmail. :-( This description of kdenetwork (3.2.0_beta1) has to be changed. It would also be great if kmail could be mentioned in kdepim-ebuild's description.
Fixed in CVS, thanks for the bug report.
Hit the enter button too fast. :-)