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Age Reversal Breakthrough: Harvard/MIT Discovery Could Enable Whole-Body Rejuvenation
(scitechdaily.com)
This is a most excellent place for technology news and articles.
The full journal article says "in vivo" not "in vitro". They have already successfully regenerated mice which are organisms biologically similar to humans.
Edit
I was wrong about this. The journal article does only talk about results obtained "in vitro" but mentions other studies that have successfully reversed cellular ageing "in vivo".
So in this study the results were only in vitro but other studies have successfully reversed cellular ageing in vivo.