But I also see there is no update from espressif since a very long time.
In my opinion it is not only headers but also the libraries that espressif provided in a separate github directory.
Suppose those are still based on an (now very old) espressif sdk.
@Baoshi : Saw you active on the bbs.espressif forum. Maybe your can ask espressif there on their update plans/schedule for Freertos sdk.
Herman