Via the Oriental-List:
##November 9 Threat Message Retracted
The Chinese Ministry of Public Security informed the U.S. Embassy in Beijing on November 10th that Chinese security authorities have determined that the source of a reported threat against four and five star hotels in China is not credible. The United States Government is not aware of any other information of any threat against hotels in China, including Hong Kong. Our warden message of November 9th on threats to hotels is therefore retracted.
This is exactly what went through my mind when I first heard the official warning, but I never expected the PSB to come right out and say it themselves. Why not? Via the BBC:
China is often accused of exaggerating the threat of Islamic militancy to justify its crackdown on groups such as its Uighur minority in the western Chinese region of Xinjiang.
So, good on the PSB!