Hello - there doesn't seem to have been any updates since February 2018 to the Mini-Cart Pro for HikaShop, but a lot has changed in Joomla 3.9 and now HikaShop v4. Has it been tested to be fully compatible? If not, when is a new version expected?

Dear PolishedGeek

We will inform to you when have the new version.
the current, we focus update all the template for joomla 3.9

thanks