https://wccftech.com/intel-z490-motherboards-pre-order-prices-asus-asrock-msi-aorus-gigabyte/

The Intel Z490 chipset based motherboards from various manufacturers are now available for pre-order at various retail outlets. Featuring support for Intel's 10th Generation Desktop CPUs, the new Z490 motherboards are accompanied by the latest LGA 1200 socket which allows full compatibility with Intel's latest Comet Lake CPU lineup.

The introduction of Z490 marks the end of the Z390 and Z370 series. While those chipsets featured inter-compatibility with 8th and 9th Generation CPUs, the Z490 chipset only supports the 10th Gen lineup for now. The new chipset adds in a range of features that expand upon from the Z390 PCH and can also handle increased I/O. So it isn't just a new chipset follow up for a new line of CPUs but its actually slightly more, something that I'd personally call an evolution of the Z490 platform in all the best ways possible.