You got it. The latest version of Mac OS X is coming in a matter of weeks, and will set you back just shy of twenty bucks. If any of those new beastly, Ivy Bridge-decked machines made you reconsider your bank balance, there's a small note of relief -- you'll be treated to a free upgrade if you decide to buy one before Mountain Lion arrives in July.OS X Mountain Lion: arrives on Macs next month, priced at $20 originally appeared on Engadget on Mon, 11 Jun 2012 14:10:00 EDT. Please see our terms for use of feeds.