From June 14th (9am Eastern) to June 21st you'll get SIX TIMES XP!  
 
I stopped playing this months ago when I hit rank 50, but this is a great excuse to go back in.

Wow. I don't own Gears of War, but that's craziness. 

I think I'm about level 60 and gave up thinking I would never get to 100. I now know what I'll be doing that week.

I was looking for a video of Marcus going "OH YEAH!"...but this is better.  

I'm only a level 36, so it's not like I'll be getting to 100 or anything, but I'll probably play a little. I'll have RDR by then though, so I'll want to play that more.

Wow. Makes me want to go grab a copy of Gears 2. 

I'll be playing it.  I'm Lv.17 or something.

Awesome! I'm at 53 now and go back every now and then, but I think I'll take advantage of this and try to get some more levels.

I know what I'll be doing next week

does anyone know if that will also mean 6x experience even when playing horde too or is that only for public matches?

Looks like a good excuse to get down with some of that.  I'll be getting my ass handed to me since I'm a total Gears multiplayer noob, but I'm alright with it.

Wow. Could give me a reason to finally crack open the copy I got back when it launched.
 
Be gentle.

Really, Epic? Was 3x XP during the week of E3 too spot-on for you guys?

Sweet

Looks like I'll be back in Sera that week. :) 
 
All the varying EXP details: 
http://forums.epicgames.com/showthread.php?t=732276