In addition to quadrupling the possible size of your workspace (now 2,000 units squared), you can change the workspace units from the default millimeters and inches to centimeters, meters, and feet. That, and apply a scaling factor of up to 1:1000.

The math hurts my head, but a post by Tinkercad about the changes shows how it's possible to fit an actual-size model of the Empire State Building into the app, something that would be impossible before.