It's click-bait - solely designed to get traffic through their website.
There is no way that future Audi ev models will use a 6 sided grille like that, and they'll never use a tailgate that is basically a flap as pictured in the render either. As I understand it, the name A2 is now dead - it won't be resurrected for at least a decade, if/when Audi have sufficient ev models which need differentiations using the 'old' model naming convention.
For the time being, they're happy with 'e-tron', 'e-tron GT', 'e-tron sportback' and so on. I believe that Audi are also reconsidering the part electrification of their range by adding hybrid models too - both the A3 e-tron and the Q7 e-tron have been killed off now and they're almost certainly not going to produce further models. What will be produced is a 'mild hybrid' range of cars, which feature regeneration and a small battery linked to a 48volt motor to assist in coasting etc, as featured on the current A8.