It is already available. It is called 'The Zocalo'.
Well... actually not.
"The Zocalo" has a really, really nice section on weaponry... but only new stuff not seen in other supplements.
What I really would like one day would be an "Equipmen Guide" which simpy contains every piece of weapon, armor or other hardware, collected from all the supplements they're scattered about right now. (maybe with some more pictures... and not just drawings, but also prop-pix and 3d images -I saw at least the Auricon PPG and one old Minbari gun in CGI form on the net once)
Of course, for such a guide to be complete, it needs to contain everything, which in turn means it needs to wait for all the "racial factbooks" to be released first. Which means it'll need to wait for at least two or three more years, as so far only the big four and the most important league races are covered (and I hope Mongoose will soon do the "not so important but seen on the show" league races -Grome, Hyach, Hurr, Ipsha, Llort, Markab, Pak'ma'ra & Yolu, the "also not very important and not even league members, but seen on the show" races -Golians, Lumati, Moradi, Thrakallans, Shag'toth, Streib & Wen'dan- and a few seen on the show but never named races, as well as the races mentioned in publications -books, supplements and the map- but not seen on the show -Antareans, Balosians, Cascor, Ch'lonas, Corillani, Deneth, Descarii, Kor-Lyans, Koulani, Tak'cha, Tikar, Torata, Tokati- and of course "historical" races -Alacans, Dilgar, Garmak, Krish, Mitoc, Orieni- --phew, lots of races still to go for them! Lots of books, even though I suppose most of them don't quite need that much space--)