The mount for the camera is more cleverly done. Camera can now be mounted right to as opposed to the camera being clicked into its case, and the case having the mount.
The heat sink for the camera looks better too. Camera prob won’t run as hot.
Can use really big MicroSD cards
I’m sure there’s other differences (improvements?), but the first page of linked to thread doesn’t provide much comparison info.
I have 3 Mobius cams in use. 2 in the race car and one in the truck. Cheap, very convenient, and reliable.
More info https://www.mobius-actioncam.com/packages/mobius2/
Comparison of GUI options https://www.mobius-actioncam.com/mobius/wp-content/uploads/2017/02/msetup-Mobius-Compare.pdf