MSI is planning to release new cards based on the AMD Radeon RX 570 and RX 580 GPUs. Not much is known about the new cards apart from the fact that they come with a new color scheme and improvements to the cooling system.
https://www.notebookcheck.net/MSI-planning-new-RX-570-and-RX-580-Armor-MK2-cards.280046.0.html