Apparently a new media kit of gigantic size (1.18 GB) has been release by Arenanet a short while ago. The kit is supposed to contain a collection of all past press kits (concept art, dev photos and gameplay screens) and some new stuff.

Sources:

http://www.guildwars2guru.com/topic/40825-new-asset-kit-over-118gb-in-size/page__p__1548466#entry1548466

http://www.guildwars2forum.com/threads/4812-Over-1-GB-Of-New-Media-Assets-Unseen-Concept-Art-Dev-Photos-amp-Gameplay-Screens

Although there are some links on the net for the download they all seem to have expired :(

Could  a release date announcement be imminent?

EDIT: Another way to download the kit is to to sign up for NCSoft Gamespress:

http://ncsoft.gamespress.com/registration.asp

Massively screenshots from Asset Kit:

            

            

            

            

            

Hell yes this means the release date is going to be announced soon. This Thursday, on 6/28/2012, they will announce the release date on the heals of the success of the stress test on Wednesday.

Here are some new images and some old images:

http://www.gamebreaker.tv/mmorpg/new-pics-guild-wars-2-mega-post/

Originally posted by Siphaed

Hell yes this means the release date is going to be announced soon. This Thursday, on 6/28/2012, they will announce the release date on the heals of the success of the stress test on Wednesday.

I wouldn't get my hopes up just yet. It's been said by ANet there will be at least 1 more BWE before release. Hopefully that turns out well, and we'll get our date some time after.

There are two images in the Press Kit which clearly aren't meant to be posted yet. The OP posted one of them.

This is the other one.

Both of the images seem like they are to be used for marketing.

Originally posted by Siphaed

Hell yes this means the release date is going to be announced soon. This Thursday, on 6/28/2012, they will announce the release date on the heals of the success of the stress test on Wednesday.

Not really. There has been an asset kit of a big size on the official website for a long time so people could start building their websites and such. Now they refreshed and added to it specifically for media partners and it still depends how much time they give them to sift through them all and for what purpose they would be used (could also be other promotions).  But I think a release date anouncement is coming soon regardless.

Originally posted by Alot

There are two images in the Press Kit which clearly aren't meant to be posted yet. The OP posted one of them.

This is the other one.

Both of the images seem like they are to be used for marketing.

Am I the only one who sees Xchans/9gags rage faces in this file? :P

Originally posted by Siphaed

Hell yes this means the release date is going to be announced soon. This Thursday, on 6/28/2012, they will announce the release date on the heals of the success of the stress test on Wednesday.

That would be just awesome! I really hope they do it, they really should! Many fans are holding this date to bring something special from arenanet, It would be wrong not to use it in their own advantage.

Finally got the whole 1.1gb downloaded in my sleep, and I've got some strong feelings about this kit. 

1) The trailer in the kit is titled "Final"

2) The sales PDF's included in the kit.

3) Road to Guild Wars 2 (note the "Guild Wars 2 release" on the timeline, though it only has 2012, not a solid date just yet).

4) Online Role-Playing Games guide, clearly meant to be a launch material with mention of "install game" an a straight guild to getting newbs into the game.

The rest is just screenshots, art, and the bio's of most of the lead people involved with Guild Wars 2's development.  That kind of stuff is stand in a kit such as this, but the above is not unless they're preparing massive launch.

Originally posted by orator1970

Massively screenshots from Asset Kit:

http://massively.joystiq.com/2012/06/25/guild-wars-2-yep-its-really-pretty/

Yeah, i saW that article of massibely, but didn't know it was about new pics. My favorites are the 3rd one, with that demon like creature. Also, of course, number 30, with the Shatterer and Destiny's Edge.

Pic 2 confirms the stiched global map is right.