So, aside from Fall of Plaguestone, I haven’t seen any official support for any of the Pathfinder 2nd Edition APs.
Are there any plans to produce them?
There are yes, we will be publishing soundsets for both editions 
Any idea on timeline!? Currently running Extinction Curse, would be mega to have these.
We don’t have a date for it as yet. You can check out our current release schedule here https://syrinscape.com/about-syrinscape/soundset-release-schedule/ Check back regularly as this gets updated on a regular basis with additional soundsets as we schedule them