I also saw that when browsing yesterday, I did not realise that it is so new. What I saw said it was a different processor from the Pi3, but similar. Pi3-like performance should be OK, 512MB is low. My feeling is that it would not cope with giving the Pi desktop, but should be able to operate the microscope and serve to another device over wi-fi. So using the ‘lite’ version of the Openflexure SD image.
Someone will need to try it 
If it works it might be the simplest and cheapest way to run two cameras on one microscope (Role of Raspberry pi compute model for dual microscope/camera setup)