Reports indicate that 3.4.3 addressed workflow issues, specifically in the workspace rendering, for many users on Windows 10.

Adobe Dimension 3.4.3 provides a set of tools focused on scene composition rather than complex geometry creation:

The .dn extension is used to preserve models, decals, and material properties for future editing, though these files cannot be imported into other, non-Adobe 3D software. Version 3.4.3 Specific Context (Late 2021/2022)

In December 2021, Adobe released security updates for Dimension to mitigate potential risks related to information disclosure and privilege elevation.

Easily place 2D graphics from Photoshop or Illustrator onto 3D models to create realistic packaging mockups.