"Leading the Cavalry" achievement lowered to 50 mounts

Looks like our little survey of mounts available for the Leading the Cavalry achievement found some ground at Blizzard -- they've lowered the number of necessary mounts from 75 to 50 in the latest beta build. Seventy-five mounts is a lot, and even though, yes, we didn't actually count any of the mounts coming in Wrath of the Lich King (surely there are plenty there), Tauren especially would have trouble coming up with that many things to ride around.

And as you can see, the prize for having way more mounts than you'd ever need is... another mount. You can nab an Albino Netherdrake (a few commenters say it's just a drake, but that model looks like a netherdrake to me) for completing the achievement. We can say this: it'll definitely stand out in a crowd. But the green and the white together? The skin may change before launch, but maybe we don't actually need to bother getting those 50 mounts after all...