SimGuruHydra confirmed in yesterday’s Q&A that Dragon Valley will release at the end of May. We should probably expect the world on May 23rd, or 30th.
Hat Tip: Sims.Mixei.ru
Q: Are you still developing content for The Sims 3?
A: Yes. We have a brand new world, Dragon Valley, coming out at the end of May. We have The Sims 3 Island Paradise shipping on June 25 and we have a Future-themed expansion arriving in Fall 2013. Beyond that, we continue to create content for The Sims 3 Store.
On a side note, SimGuruSmitty mentioned that garden lovers will be very excited about Dragon Valley.
— Lisa Smith (@SimGuruSmitty) May 7, 2013