Just over a month ago Microsoft released a Surface Pro 4 with 8GB RAM , 128GB HD with a i5 core. MS also now look to be releasing this with the addition of 4G LTE.

You can get the 4G LTE version current on the Italian Microsoft Store https://www.microsoft.com/it-it/p/surface-pro-for-business/907tds4dgwwv/BTM2?activetab=pivot:overviewtab

No signs of it in the UK store just yet, but expect to see it soon!