Patch 4.3 Guides

Here's a quick link to Wowhead's Patch 4.3 Guide.
http://www.wowheadnews.com/blog=197962/wowheads-patch-4-3-guide

Wowhead's Achievement Guide
http://www.wowheadnews.com/#achievements

WoW Insider's Achievement Guide
http://wow.joystiq.com/2011/09/29/the-overachiever-examining-patch-4-3s-new-achievements/

and the WoW Achievements Guide for 4.3
http://wow-achievements.com/blog/2011/11/29/43-new-achievements-list/

Also, here's the link to the official Patch 4.3 Desktop Wallpaper.
http://us.battle.net/wow/en/media/wallpapers/patch?keywords=?view&view#/hour-of-twilight