Blizzard has released a preview of the Hunter Tier 13 armor set that will be available in World of Warcraft Patch 4.3. You can click on the above image to view a larger version. Here's their description of the Wyrmstalker Battlegear:
"We like to tie a Hunter’s Tier armour in with an appropriate donor creature – it suggests the Hunter has actually hunted for the set! As there’s an awful lot of dragons in this patch, a draconic theme was the way to go. We wanted to reference but not simply reproduce the classic Dragonstalker set. To that end, we limited the use of dragon heads to the helm and chained leathery wings around the shoulders which gives the impression of a skeletal dragon crouching over the Hunter’s upper body."
In addition to the Tier 13 reveal, Blizzard has posted a visual guide to hunter Tiers 1-12 for Transmogrification purposes. You can view the hunter's armor history after the jump, and check out Wowhead's guide to find all your old tier gear. Also, be sure to browse through all of the currently released Tier 13 previews.