Here are links to scans from the Fallout: New Vegas 10-page writeup from PC Games. It's in German, obviously, but there are some very interesting looking things, including a whole page dedicated to weapon modification. This appears to be the best and most comprehensive Fallout: New Vegas preview out there right now, so if anyone speaks German and wants to translate the article for us, that would be super-awesome:
Links removed per magazine's request. You can still find the new information bullet-pointed here.