What is highly unusual is that the official news report (CCTV) never mentioned a word about what types of the ships that were commissioned. All they mentioned are the pennant numbers and the names of the ships: Long March 18, PLANS 31 Hainan, PLANS 105 Dalian. It's pretty clear from the video what types of ships they are though. Type 055 and even Type 075 are nothing new and have all had their highly public launch ceremonies; there had never been any public launch or commission ceremony for Type 094 though.