http://www.wowchina.com/

Starting October 16th, if you have a level 60+ character on your account, you can get a free upgrade to level 90 (on any character). If you boost a level 60 or above, you also get maxed professions.

Ok awesome, in prep for the new xpac... is it limited time offer or 1 time use any time?

I believe it's gonna be available till December 17th.

new question... i am having trouble finding how to boost now???? it was there before, but now i either forget or cant see the path to it.

help?

did some searching, here is more info. The boost was available for free on my good copy of wow. I upgraded a character.

BUT i have other accounts on the server that when i log in, do not show and boos at all. But those accounts are different battle.net accounts... still... cant find the boost... says i have to buy coins

Do you have at least a level 60 character on the other battle.net accounts?

And from their FAQ:
常见问题：
Q：我为什么不能使用角色免费直升90级福利？
A：试玩账号、防沉迷账号、未成年人账号都无法使用角色免费直升90级。（未成年人若能在2014年12月17日前满18周岁，所使用的通行证也能免费提升角色）
另外，若账号下角色数量已达到上限，并且全部都是90级，也是无法使用免费角色升级的。

Unable to use the boost: Trial accounts, anti-addiction accounts, and accounts where the owner is underage.

should not be any of those restrictions. 1 account is only under the same ID as mine, another completely different. and ya,, 3 accounts at least have a lvl85 or up.

No idea... it asks if i want to pay to boost. 150rmb... but never offered a free boost to these accounts.