AMD released more information about its upcoming Ryzen CPUs today. Before this there had been a lot of leaks and speculation, but they've now confirmed the launch date and prices for the top three models. All three are 8 core/16 thread units and will be released on March 2nd.
1800X - 3.6GHz base/4GHz Turbo - $499USD
1700X - 3.4GHz base/3.8GHz Turbo $399USD
1700 - 3.0GHz base/3.7GHz Turbo $329USD
Reviews are embargoed until launch day, so we won't have any benchmarks until then, but AMD claims that the 1800X matches or beats Intel's 6900K in Cinebench 15. That will, of course, be a best-case scenario, but unless it's significantly worse at other tasks it looks like AMD is finally back in the CPU game. AMD is positioning these against Intel's HEDT line (6800K and up), but at those prices they may be appealing to gamers as well.
I'm really interested to see how the 1700 and 1700X (more cores) stack up against the 7700K (higher frequency) in games. I assume the 7700K will stay ahead for most games, but I'm not sure it will be by enough to convince me to give up on an extra 4 cores since I do more than just play games on my PC. Of course, this might also put pressure on Intel to drop the prices on its HEDT line at least, which would be good for everyone.
Here's a link to Anandtech if you want a more complete rundown of the announcement.