The last-minute specification change of the AMD Radeon RX 5600 XT caused a lot of issues for the company's board partners and reviewers. Cards with the original BIOS were already shipped to the retail channel so everyone who has bought an early card will need to flash the BIOS to the latest version to get the higher GPU and memory clockspeeds.
It also looks like not all cards will have the new official specifications. VideoCardz writes MSI was having issues delivering a stable BIOS to reviewers. The company has four Radeon RX 5600 XT variants and it seems like only the GAMING X will receive higher GPU clockspeeds.
None of the four options from MSI that were previously announced will get 14Gbps GDDR6, instead the company is creating a new SKU called Radeon RX 5600 XT Gaming Z. That model seems identical to the GAMING X, the only exception being the upgrade from 12Gbps to 14Gbps GDDR6.
Overall, AMD has a winner on it hands with the Radeon RX 5600 XT, but there's no denying that the launch was weird and poorly executed.