No. The WisePOS E is no longer sold, but it's still fully supported. You can keep using yours for as long as it works for your business. There's no forced migration and no deadline to switch. Software updates on the WisePOS E are supported by Stripe until 2030.
If you're ordering an additional reader for a new station or location, you'll be offered the Stripe Reader S710, since that's the current device available for purchase. You can run WisePOS E and S710 readers side by side on the same Booksy account without any issues.