The Warlords of Draenor trademark is now visible on the U.S website, which means it's definitely legit. They always are once they show up there.
The trademark text says:
IC 009. US 021 023 026 036 038. G & S: Computer game software, computer game discs, downloadable computer game software, computer game software downloadable from a global computer network, interactive multimedia computer game program; Downloadable electronic game software for use on portable electronic devices such as mobile and cellular phones, laptops, handheld computers, and tablet PCs
IC 041. US 100 101 107. G & S: Entertainment services, namely, providing on-line computer games; providing on-line non-downloadable computer games that may be accessed via a global computer network; providing online news and information in the field of computer games