I have two different views on new battery technology press releases.
1) "Hey, that's great, I hope it works out for them!"
2) "Can I actually pull out my visa card right now, and buy some individual units online?"
Re: #2, most batteries have very little relevance to me as an end user until they're commercially available to buy. For instance the Panasonic NCR18650GA (245-250Wh/kg) li-ion, the Molicell P42A (21700 size li ion that's capable of being discharged at 45A rate with appropriate cooling), and other state of the art technology. I can go buy those right now from some reputable online stores.
Until whatever other new battery shows up to actually purchase, it exists in a liminal, theoretical state only.