Just a real quick link to the official patch notes as hosted by MMO-Champion.
Their post specifies only US realms but no mention is made of us EU folks having to wait an extra week.
- Your class has changed, read your notes;
- Some glyphs have changed, check yours;
- A few UI changes have happened, update your addons;
- Heroics have been tweaked (that is many nerfs and a few buffs);
- Flasks need less mats;
- Justice Points can be traded for ore/leather/herbs;
- “Many bugs, handled them” I love that line;