Yes, you will be able to swap the hub out. At this point you will not be able to keep the same station ID but WF have said they will be able to link the data so you don’t lose the history. Here is the process:
From the July 28, 2020 update on Kickstarter
Storm & Fire Ready Kit and Tempest Remote System: We are building something truly exciting with these Pro Hub versions of the Tempest System, though the time and effort required to deliver a perfect finished product have caused delays. We will be sending out a Backerkit survey next week to provide an updated timeline and new options for fulfillment of Pro Hub versions of the Tempest.
Check Kickstarter or Indiegogo to learn more about the two Pro Hub options. Tempest Shipping Update & More also refers to the Pro Hub systems.