I have to call BS when I see it.
FIRST: If you are even considering getting a pc virtual light gun then you haven't read a single post at this board regarding light guns before. Everyone who owns one has said they're junk. Mine is sitting in the closet collecting dust, and not after trying to get it to work.
SECOND: As U_rebelscum stated, it doesn't matter if you're shooting a tv screen or a computer screen. It's not a hardware issue. I can play with two USB lightguns on my computer screen. The problem is OS and software. Currently the two guns fight over the same cursor, so if both are fired at the same time, it will only recognize one of the guns. I've tested this myself. I suggest you give it a try and see for yourself. So why doesn't this work with analogmame+? If you'd read older posts here you'd know. u_rebelscum did it with dx and AL didn't. That's what U_rebel's working on now.
THIRD: The older AL guns weren't meant to be run in mame, and were crap. I have those in my closet collecting dust as well. In fact, if someone's willing to pay shipping and handling I'll send them my PC virtual light gun, AND my actlabs GS guns. However, the new usb guns work very well in mame currently. There just isn't 2 player support yet. I completed a game of virtual cop using the AL guns without problem, and I consider that a pretty challenging test to the guns accuracy.
One other thing, if you are going to buy a Light Gun if you buy it from he link at my site I get a kickback from Act-Labs and it would be GREATLY apreciated. Thanks a lot.
FOURTH: If they're not even announcing it at their official site, then I'm not necessarily going to believe this from someone who could make whatever statement they want to get "kickbacks."
FIFTH: I hope they do get two player support, but as it stands right now, it will happen because of a software change. Even the new guns plug in with the usb cable. The only difference is the monitor/tv pass thru, and as I've already stated, that's not the problem.