This is the Grand California. Like the regular model, of which some 160,000 have now been sold, the new addition to the family is factory-built by VW. But instead of being based on the mid-size Transporter van, the Grand California is an off-shoot of the (much) larger Crafter.
Basic physics will tell you this means there’s more room inside, so in addition to the familiar kitchen, dining and sleeping areas the established California excels at, the Grand California also has room for a shower and a toilet.