Welcome news to me until today but just post it here anyway as I will be one of the first to buy them. These thin tiles will be known as Skin and they are 4.8mm thick
Refin the manufacturer says that the tile properties are as hardy as porcelain
For those with knowledge of Italian can find out more SKIN: piastrelle sottili in gres 4,8 mm | Refin Ceramiche
BTW If you need any help with Italian language please let me know