Here is the official file of New HSK1 Vocabulary List which was released on Jan 2022. There are 500 words.
In the old system, there are 150 words in HSK1 and 150 in HSK2. The new system has combined the old 1&2 and also added around 200 words. Some of the added words are from higher level of the old system, but most of them are totally new.
This Analysis File could show you clearly.
Preview of the Analysis File: