You no longer have to try an OS X beta (or a WebKit nightly build) to see where Apple is going with Safari's under-the-hood features. The tech firm has released a Safari Technology Preview that helps developers work with the latest in web technology. Don't expect to see any major interface shake-ups as a result -- the big improvements in the initial version revolve around newer, faster JavaScript support, and the rest are smaller things like minor HTML updates and a better web inspector. If you craft websites for a living, though, this makes it easy to test your work without living too close to the bleeding edge.