the news is a hoax. "It should be glaringly obvious why they are specifically not calling it a cryptocurrency wallet, and why they attempted to quiet rumours of such claims back in December.
Security: Galaxy S10 is built with defense-grade Samsung Knox, as well as a secure storage backed by hardware, which houses your private keys for blockchain-enabled mobile services.
Samsung Knox is not a cryptocurrency wallet. Don't spend your hard earned money for this feature. Personally, I think the wireless charging of other Qi devices would prove more useful than "Samsung Knox"."