Today, blue poster Zarhym announced a series of changes. The important thing to grasp here is that you will get mounts sooner and cheaper, including your first flying mount.
Prices will include training + mount cost but not reputation discounts.
First Ground Mount
Once upon a time, you got your first mount at level 40 for 100g. They moved that back to level 30 and 45g not too long ago. Then, today, they moved it again: level 20 and 5g. Movement speed still increased by 60%.
Second (Epic) Ground Mount
Once upon a time, the first epic ground mount cost 700g at level 60 and have remained thus through all permutations. They increase speed by 100%. Today, they moved that back to level 40 and 60g.
First Flying Mount
The normal flying mounts have stayed static at 900g at level 70. This increases your speed by 60% on ground or in air and the changes to this one are more impressive than for the others: 650g at level 60 and a speed increase to 150% while flying. So not only are you flying sooner, you're flying faster.
Second (Epic) Flying Mount
5,200g at level 70 for 280% air speed. No big changes here, except the mounts themselves are reduced by 100g, making the total cost 5,100g.
Cold Weather Flying
All in all, I love it. I want my piles of gold and several months of my life back, but I love it. It makes leveling easier, which is the point. And as for the whole "Noobs need the game on hardmode like we had it" -- the game is ALWAYS hardmode for noobs. They don't know how to play, so it's reasonable to expect that they find it hard.
When someone is a new player, unless they have a friend to help them out with stuff like this, they don't even know mounts exist until they go to a big city and ask "Where u get that?" And usually the answer is "Somewhere you can't go yet, like Stratholme." Which doesn't help in the slightest.
So you hardcore purists just chillax. The really dumb ones will fail no matter what Blizzard does to help them. And the smart, responsible ones really don't need you putting them down.