What is important is that there were apparently major deficiencies in the first version. I'm sorry, but I don't believe it. This is the cryobiological equivalent of a trip to the moon in 1900.
Extraordinary claims require extraordindary evidence.
Press releases and private communications are not evidence. I think it's unfortunate that Mrs. Visser is again reporting breakthroughs outside the scientific literature. This is not the way science should be done. If so, even if the method works, it may not be extendable to larger animals or organs.