This year's keynote at the Worldwide Developers Conference is expected to bring some major announcements, and possibly the largest simultaneous release of updated and new products in Apple's history. Almost the entire line of Macs is expected to be refreshed, including the beleaguered Mac Pro. Apple is widely expected to tell us more about OS X Mountain Lion (and possibly even release it at WWDC), and updates are expected for iCloud as well. We wouldn't even be surprised if Apple previewed iOS 6 during the WWDC keynote, since there have been more and more rumblings about the next-gen mobile OS in recent months.

We're not expecting to hear much about the next-generation iPhone just yet. Last year, Apple moved its iPhone release schedule to the fall (October, to be exact), and we suspect it will wait until fall to update. Besides, Apple already has a lot on its plate at WWDC, planning to emphasize Macs, Mountain Lion, and iOS 6 (the latter two being tied together more than ever).

We'll find out the answers soon enough, and if you're watching the Ars liveblog, so will you. Our crack team is on the scene to bring you the announcements as they happen in both text and photo form, coupled with our regular coverage of the event. The whole thing is set to take place at 10am PDT (GMT-7) on Monday, June 11, 2012 (see it in your timezone).