WoWprogress should show a "Time after release" behind boss kills to account for the gap in release windows. Would be interesting to see how long the respective guilds actually spent getting bosses down.
Il'gynoth looks pretty miserable from dungeon journal. Apparently it is.
Interesting to see if Serenity can kill 4/7 today.
From scratch (EU) 2/7 down
so method/serenity still not clearing, they seem to be pretty confident that certain boss will be a brick wall for certain guilds?