Sony may refresh the name of its Xperia phones. Rumor has it that the Xperia XA3 and Plus will actually be called the “Xperia 10” and “Xperia 10 Plus”. There’s more to it than that, the “X” name could go away completely.
The Xperia XZ4 may launch as the “Xperia 10Z”. Other letters are possible too – like “Xperia 10X” – but since X=10 we think that going with “Z” makes more sense (plus, it’s a callback to the old Xperia Z flagships).
The “X” series first came around in 2016 as before splitting into the premium XZ and mid-range XA. As for the Xperia line itself, that made its debut in late 2008 with the Xperia X1, so the 10th anniversary was a few months ago.
PS. Sony Japan has been teasing purple as a possible new color for the Xperia XZ4 – or 10Z, if that is indeed its name.