Sorry for the delay in answering, but for those asking about Sheik, I dont have any more BUT I will gladly be on the lookout for more of her. Also I do know she is set for official release this Friday at GameStop to coinicide with the release of the new 3DS. Shulk is also set to release in store this Friday. This is at GameStop.
This Friday at Toys r US marks the release of Sonic, Ike, DeDeDe, and Mega Man.
Meta Knight is the last to get an offical release on the 20th at Best Buy.
So if everything is correct this looks like the release list
February 13
New 3DS (all retailers)
Majoras Mask 3D (all retailers)
Shulk (GameStop exclusive)
Sheik (GameStop)
Toon Link (GameStop)
Ike (Toys r Us, Best Buy)
DeDeDe (Toys r Us, Best Buy)
Mega Man (Toys r Us)
Sonic (Toys r Us)
February 20
MetaKnight (Best Buy exclusive)
Ike (GameStop)
DeDeDe (GameStop)
Mega Man (GameStop, Best Buy)
Sonic (GameStop, Best Buy)