ACE posts today on the great idea of the new .460 S&W magnum in a lever gun. I've already posted (a few days back) on Wild West Guns' Model 04 in .500 S&W magnum- well, that lever gun is also available in .500 Linebaugh, .480 Ruger and .475 Linebaugh, and .454 Casull. Though it only mentions 500 and 454 on the WWG homepage, this site mentions the other calibre offerings. I'm sure it will not be long before the 04 is also available in .460 S&W magnum. In fact, WWG will probably be one of the first gunmakers to do so.
Other manufacturers seems to be pretty slow to jump on the big bore lever-gun bandwagon. Marlin offer the Model 1895RL in .480 Ruger/.475 Linebaugh, but other than that big-bore lever guns are sparse. Puma have the M92 in .480 Ruger and .454 Casull but that's about it as far as I can tell. It's a pretty odd situation considering the popularity of big-bore handguns- surely the market is calling out for companion lever guns to go with them?