Sony's upcoming over-ear headphones have leaked, and they're looking like a supercharged version of the XM6. This is according to Sony's websites in Australia and New Zealand, which briefly posted a holding page for the new headphones. The page has since been removed, but the details have already spread like wildfire. The headphones are said to be made in Vietnam and boast premium build quality, which is expected given the price tag. At €629, these headphones are significantly more expensive than the XM6, which launched at £400. This suggests that these headphones will be a new flagship model, not just a special edition. The question remains: what features will justify the higher price? The XM6 was already a top-tier pair of headphones, so what could Sony have added to make these headphones even more desirable? The answer may lie in the details, which we'll have to wait for the official release to uncover. But one thing is certain: Sony is raising the bar for over-ear headphones, and we can't wait to see what they've come up with.