The CPU update will bring Intel Evo to HP's mid-range Envy 13 family of subnotebooks. Physical features of the chassis will otherwise be identical to the 2019 Ice Lake Envy 13 family.
https://www.notebookcheck.net/Intel-Tiger-Lake-is-pouncing-onto-the-HP-Envy-x360-13-and-Envy-13-this-November-alongside-Thunderbolt-4-compatibility.496360.0.html