There are some new things compared to current Eevee there.
- Support for panoramic view, four types in total: fisheye equirectangular, fisheye equidistant, fisheye equisolid and mirror ball
- Unlimited pow… light count, as was mentioned in this thread previously. Before max was 128.
- Initial implementation of deferred shading
- Basic support for gpencil geometry
That’s just visible features. There might be a lot of groundwork or/and improvements done that we missed. For example, he used this paper which I don’t think is used in either Eevee or Cycles since it was publiched only year ago.