However it appears to be a little broken in the beta. it still says subreddit on the label instead of community and won't save the name of a community when attempting to add the action in tasker.
On the main tasker actions screen it just shows
???
Instead of the normal config details you should see. It does not throw an error when running the action in the question mark state.
Hopefully once you get out of beta there can be some cool new tasker actions or profiles like the ability to auto backup your settings or change sync settings based on tasker profiles.
For those who haven't used the tasker feature it lets you automatically "sync" posts to your phone offline with the choices of what community, how many pages and whether or not to get comments as well. for example: every morning before you get on the subway at 7am or while you are still on your home wifi to save mobile data
Edit: Spelling formatting.
Barilla