根据最新Build 18888 挖掘出的客户端字符串
CHARACTER_UPGRADE_WOD_TOKEN_DESCRIPTION_CPT - Expires December 17, 2014. 1 per Battle.net account.
CHARACTER_UPGRADE_WOD_TOKEN_DESCRIPTION_KRW - Expires December 17, 2014. 1 per Battle.net account.
CHARACTER_UPGRADE_WOD_TOKEN_DESCRIPTION_TPT - Expires December 17, 2014. 1 per Battle.net account.
CHARACTER_UPGRADE_WOD_TOKEN_TITLE_CPT - Free Character Boost!
CHARACTER_UPGRADE_WOD_TOKEN_TITLE_KRW - Free Character Boost!
CHARACTER_UPGRADE_WOD_TOKEN_TITLE_TPT - Free Character Boost!
FREE_CHARACTER_UPGRADE_READY_KRW - You've Received a Free Character Boost!
FREE_CHARACTER_UPGRADE_READY_TPT - You've Received a Free Character Boost!
FREE_CHARACTER_UPGRADE_READY_CPT - You've Received a Free Character Boost!
可见亚洲区(国服、台服、韩服)可能会有免费的直升90级服务，有效期至2014年12月17日，每个战网账号有一次机会。
以上均为猜测，以官方发布为准。
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