World of Warcraft is a cultural phenomenon like no other. The continued patches from Blizzard, many of which add new content and improve the game overall, have only reaffirmed it each time as the king of MMOs. While the two-digit patches don't come all that often, the three digit patches do arrive with decent regularity, which is where 2.4.2 comes in.
Featuring a host of balancing changes and bugfixes that accompany any patch, 2.4.2 also changes how arena ratings work and changes profession cooldowns. The full patch notes, as always, can be
found on Blizzard's site. You can snag the patch through our
downloads section. But, of course, you already knew that.