The successor to the Surface Pro 7 is here, but it is not the Surface Pro 8. Instead, Microsoft has called its latest convertible the Surface Pro 7 Plus, and has only made it available to business customers and educational institutions. The Surface Pro 7 Plus contains plenty of upgrades over the Surface Pro 7 too, albeit in the same ageing chassis.
https://www.notebookcheck.net/Microsoft-Surface-Pro-7-Plus-introduced-with-a-larger-battery-a-replaceable-SSD-Tiger-Lake-processors-and-LTE-support.514491.0.html
Tiger Lake, Bigger Battery and upgradable SSD make it an interesting update...and I can see the business sector demanding some of these updates. The lack of Thunderbolt is a big miss to me as it still means you need separate docks for surface products vs others. But since its limited availability it quickly becomes an also ran... serving mainly to make the consumer model look even more outdated and not worth buying.
If I was ever interested in a Windows 2-in-1 detachable laptop, I would still go for one of Lenovo, Dell or HP's that have better repairability, configuration options, and most importantly, better Wacom AES pen vs MPP.
But i3/8/128 base config, upgradeable SSD (albeit 2230), bigger battery and XE graphics are all welcome changes people have been asking for. Now if MS updates the chassis to properly accommodate more powerful mobile processors and better ports selection, I might even try out the Surface Pro 8 in the future.