This appeared yesterday, although I believe has the name spelled incorrectly. I found a Queen Sirikit on Wikpedia, however. Here is what Ben wrote. I cannot comment on how significant this is.
Posted on Ben’s home page.
Queen Sikrit of Thailand passed away quite some time ago and the Government of Thailand will soon make a formal announcement of this, sources close to the Thai Royal Family say. We would like to convey our gravest condolences to the people of Thailand as well as to her family.