Wake me up when they have an actual reasonably priced working product in the market. This is getting tiresome as "breakthrough" news piled up but we are still using almost 10 year old technology.
That said, I'm happy to hear the amount of research put into finding better batteries.
The thing though is that by defining every discovery as breakthrough, you end up confusing the readers and, more importantly, devaluing the discoveries that are really going to have a big impact.