Crossfire Expansion: Hoping to have it by Gen Con. Going to have a bunch of new cards all around, and will include two new Role cards, which will be hybrids of existing roles. I believe they are something like Social Adept (Red/Blue mix) and Combat Rigger (Green/Black mix), but I'm not 100% positive on those. The expansion will NOT include rules for 5-6 players though, it just adds new roles to give more options. Expanding for more players is something being discussed for a future expansion though.
Dice: I really wish we sold dice (and the shirts, mugs, cups, shot glasses, etc) through our website. I think we don't for logistical and storage reasons. It's easy enough to order up a single batch of dice and store a few boxes in someones house, and bring them to the cons. Stocking and shipping dice year round is another matter. But I agree that it would be awesome if we did.
The Q-Workshop dice are really neat too, though I've always found Q-W's dice to be a bit "busy" for my taste. They're really pretty, but all the funky designs can make them a little harder to read. With the SR dice though, they have a distinct design for the 1's side (The Shadowrun Dragon Skull) and the 5's and 6's (as shown here), and the 2-4 sides have a less distinct design with the numbers more prominent on them. So picking out Hits (the 5's and 6's) and potential Glitches (1's) is pretty easy.