Gigabyte has submitted RX 6500 XT SKUs with the EEC. The listings confirm that Gigabyte will be one of AMD's partners to sell RX 6500 XT custom cards, and that the RX 6500 XT has 4 GB of GDDR6 VRAM.
https://www.notebookcheck.net/AMD-Radeon-RX-6500-XT-submissions-confirm-Gigabyte-custom-cards-and-4-GB-of-GDDR6-VRAM.583637.0.html