Well, they say that is was announced this year in August by the Chinese Ministry of Industry and Information Technology, and that they will be built by the China Shipbuilding Industry Corporation No. 712 Institute.
They say 5,000 tons, and a completely new hull design.
We shall see.
They give these references. Can someone who speaks Chinese check them out?
1. 2013-08-22, 中国054B护卫舰或使用全电推进 具有6大优势, Sina.com
2. 2013-08-07, 如此凶猛:中国海军054B护卫舰问世, 战略网
The first reference shows this pic as a representation of the Type 054B:
The second reference shows the following picture as a Type 054B under construction:
But those two pics certainly do not match. There is certainly not enough space between the gun mount and bridge of the second picture to include what is shown in those spaces in the first, particularly the VLS mounted along the length axis of the vessel.