From the unconfirmed rumors file: According to a post on the WildStar Reddit, the game will be hitting preorder status soon in preparation for a June 3rd launch. Again, this in unconfirmed.
"Carbine Studios and NCSoft have finally announced the release date of Tuesday, 3rd June for their comedic MMORPG, Wildstar."
[Cached page showing release information]
[source] Release: 3rd of June (31st of May is head start if you pre-order)
Pre-Orders: 19th of March
The originating site has been taken down but not before Google managed to cache it.
Let us know what you think in this forum thread.
Source: WildStar Reddit