Sony's PSP Go launched in late 2009 to mixed reviews and tepid sales. A little over a year later, Sony announced the portable console's successor, the NGP, leading to speculation about how long the PSP Go would last. Now, a report out of Japan suggests production on the device is winding down. Sony responded to inquiries about the report with vague PR-speak, but a UK retailer confirmed that they wouldn't be receiving replacements once their current stock ran out.