News of a summoning change coming for Warlocks, and Wrath of the Lich King is the new "king" of first-day sales, according to this news put out by Blizzard.
Yep, I bought mine at midnight, at the Walmart across the street from my apartment complex in Reno. I thought I'd have to go to the across town, but even this small Walmart had it and there was a line of people already waiting when I arrived at midnight.
While I bought it on day one, I was unable to go to the midnight opening as I had university that day. Beacuse of that, I had to go get my copy in the afternoon. Nevertheless, I was lucky to have ended early that day so I was able to play WotLK.
EDIT: Anyway, no suprise WotLK beat BC in sales on day one. More people then ever before anticipated this expansion.
I went to a local Gamestop inside a mall and waited. About 20 people there when I got there at 10pm. The entertainment was provided by "The Loremaster" (as we called him). Your typical stereotypical egg shaped mother's-basement kind of nerd who knew everything about the game (and made it a point to correct anyone even remotely wrong) yet eventually admitted to never even getting past Karazhan. At midnight, we were in and out of there as fast as possible.
I went to a midnight opening and had pre-ordered a regular WOTLK just incase I couldn't get there for a collector's edition, at a electronic store in Canada called Futureshop. I read on the FS forums that people we're lining up at like 5:45 and I couldn't get off work until 7. I made it there around 7:40 and not a soul was standing in line. It was freezing outisde about 5 degrees celsius so I went inside until they closed at 9. I then waited in line from 9-12. They had a contest going at every FS location that whomever dressed up in the best WoW costume would win a 100$ gift certificate. While we waited in line a few employee's came out to smoke and I was talking with a few telling them how early i'd been there and whatnot. Around 10:30 the manager came out and said he might have some good news for me. He then walked to the back of each line (one for pre-order one for non-preorder) and came back to me and said that no one was in a costume and that if no one showed up by 11:30 I would win for being here the longest. 11:30 rolled around and no one showed up in a costume so I won! I basically got the collector's edition for free. What a great night!
People have been annoyed since the Warlock class has existed on day one about the usage of shards. They helped out in BC with health stones, it only took them a few years to get summoning worked out too ?
There were so many well written ideas posted on the Warlock forums since the Molten Core days, but basically Blizzard said "F U", and brushed them off because no changes were needed according to them.
Nevertheless, I was lucky to have ended early that day so I was able to play WotLK. 
