This new event runs 26th April - 19th May.
If you are a merchant, the area is now ready for you to come pick a spot by buying the logo sign on an available store or cart: http://maps.secondlife.com/secondlife/Wonderland%20Beach/94/132/23
The sooner you set up, the better. I'll be doing some more shopping for Spring decorations to add to the event area. Still plenty of room ;-)
With any questions, contact Alice Klinger inworld.
Here you find everything Spring or Wonderland related from decorations to outfits in a beautiful park area, and a big treasure hunt.