The images are of various places around what looks to be Utgarde Keep. Additionally, there is a very real looking screenshot of the alpha installation package. Sources tell me this is very close to what is on the docket at Blizzard, again lending credibility to these leaks.
Stay tuned to WoW Insider for all the latest Wrath of the Lich King information. Click the gallery below to see the full leaked sets.
Updated 12:53 a.m. EDT: Login screen was a fake. Removed. However, other screenshots still stand up with our sources. Thanks to Aichon, Kyraa, and our sources for helping clear up which images are real and which are fake.
Updated 11:00 p.m. EDT April 21st: Most of these images came from Two Hammers over at Gamebunny from his Blizzcon 2007 trip. However, still good screenies for people to enjoy.