I'm guessing they think too many commercial users are using the free version. Here is more info. It's supposed to happen on Oct 1st. The full version is on "sale" for $300/yr.
https://knowledge.autodesk.com/suppo...e-Changes.html
https://www.autodesk.com/products/fu...426.1585597896
There are bunch of limits that they will impose. Max of 10 active drawings, no 4th or 5th axis milling. And I'm in the middle of designing a 4 axis router.