Taken from Wowraid:
Tome of Cold Weather Flight is actually a new heirloom item planned to go into patch 3.2. At level 80 players can buy this heirloom item from the Cold Weather Flying Trainer in Dalaran for 1,000 gold and send it to an alt of the same realm, faction and account. The tome can be used to learn Cold Weather Flying at level 68, consuming the tome in the process.
You can buy Cold Weather Flying (note: no change in the price), and send it off to an alt; the item is consumed when the alt learns it. "Big deal!" was my first thought - it's the same price, and single use (at first I thought it meant you could mail it to *every* alt, thus saving you the cost for each subsequent character). If it gets used up, you're not saving any money, so who cares?
But then I realised what it actually means - the cost is the same, but you no longer have to wait until you are almost through levelling in Northrend to be able to fly.
You'll be able to fly in Northrend from level 68 - essentially immediately - by having your main character mail you the skill while you're still in Outland. No levelling to 77. No trudging across Northrend on foot/horse/cat/monkey. You'll be able to fly as soon as you get here!
It really goes without saying that this will make a massive, MASSIVE difference to levelling. Especially to Alliance characters starting off in Daggercap Bay, ugh.
More info on raid extensions
* In order to allow for parties and raids to progress through instances at their own pace, players can now extend a dungeon or raid ID on an individual basis.
* Existing or recently expired IDs can be extended via the Social tab under Raid by clicking on Raid Info.
* The ID of any instance to which a player is saved can be extended. Doing so will extend the lockout period by the same amount of time as the original lockout (i.e. extending an Ulduar raid ID will add 7 days, a Heroic: Halls of Lightning dungeon ID will add 24 hours, and a Zul’Gurub raid ID will add 3 days to the lockout time).
* An ID can be extended more than once.
* An extension can be reversed on an individual basis provided the player does not do anything in the instance during the extended lockout period that would save that player to the instance.
So my interpretation of this, correct me if I'm wrong:
- extensions are individual; each person chooses to extend their ID or ditch it for a fresh week/day/3 days/whatever
- if you decide you don't want it extended anymore, you can reverse it, BUT
- if you've killed another boss since extending it, you have to wait for the rest of the extension period to expire before you can start fresh.
So if you do half of Ulduar, extend your ID, and then kill one more boss on a Thursday, you can't just opt to reset the instance and get a few days of farming in before the next raid reset on Tuesday.
Also, the second last point is pretty interesting - it would seem that you can extend your raid period indefinitely, for as long as you need. That should really help the raiders who can only raid a few hours per week, but are really keen on conquering the fights; but also the hardcore raiders whose team might be completely decked out (and so don't need resets to farm gear), but want to push on for their kills.