There won’t be any new free assets available for the Jam, no. We do have a variety of existing, free assets here which you may utilise: https://syntystore.com/collections/free-synty-assets
We also have the All Access Pass though, which is our subscription service that provides you with access to our entire library while you are subscribed. It’s a great way to access our library without forking out the full price of one pack :)