I think @monkeyhanger is spot on regarding the interior.
Auto Bild is the sister publication of Auto Express who have a reputation for producing some woefully inaccurate renders of mid life model refreshes and next generation models.
The car in that video has new panel pressings for bonnet, wings, doors and rear quarter panels (waist level creases have been removed from the side), top of the VW emblem on the grille doesn’t ‘cut’ into the leading edge of the bonnet. I’d say it’s extremely unlikely that VW will completely re-clad the Polo with new panels as part of a mid life refresh; that would be an expensive facelift. Externally, the previous generation car’s mid life facelift just got new bumpers, head light and tail light clusters (internal elements of the lights were redesigned) and some new alloy wheels for some models.
A mid life refresh is to maintain customer interest and sales at low cost to the manufacturer, so I’d anticipate that externally, we might see a redesign of the bumpers, possibly new front wings if VW fit the mk8 Golf and latest Tiguan style headlamps with ‘eyebrows’ which would then necessitate a redesign of the front wings, and maybe there’ll be some new alloy wheel designs. That’s likely to be it for the exterior, and the interior’s likely to lose its easy to use, intuitive controls, with some of the basic, often used functions hidden somewhere in a sub sub menu accessed from a large iPad style touchscreen. Mechanically, there might be some hybrid engine options - maybe the GTI will reappear with a petrol/electric hybrid engine - similar to that used in the mk8 Golf GTE - to make it more emissions-friendly.
I’m glad I’ve got my GTI+; a car that hasn’t been hit with the ugly stick and has conventional interior controls