It's also a very subtle signal for several reasons to release it the day after Extended Support for Windows 7 ended. On the one hand, it supports Windows 7, so there is a possible mixed message there, which is why it is subtle. On the other hand, some of these Enterprises should realize that the last time the browser team at Microsoft did a release like this after/ahead of a Windows EOL they highly revised their browser security support policy. (Back with IE11 adding support for a couple older versions of Windows and Microsoft immediately dropping support for IE <11, despite earlier "bundled with Windows support timeframe" promises.) It can be seen as a very subtle "IE is dead, move on from it, already, you dinosaur customers".
I'm not sure it will be part of 20H1. https://blogs.windows.com/msedgedev/2020/01/15/upgrading-new... says:
> If you’d prefer not to install Microsoft Edge manually, you can wait for it to be installed in a future update to Windows 10, following our measured roll-out approach over the next several months. We will start to migrate Windows 10 customers to the new Microsoft Edge in the coming weeks, starting with a subset of Windows Insiders in the Release Preview ring.
I'm guessing 20H1 will be released sooner than several months.