Well-connected supply chain analyst Ming-Chi Kuo says mass production for Apple’s rumored headset has been pushed back and forecasts shipping numbers this year of 200k to 300k units instead of 500,000 or so.

Kuo suggests the change is tied to a lack of optimism about the launch and “uncertainty” about a WWDC reveal — echoing a recent New York Times report — and while I don’t know if that’s the case, I’m sure there will be more rumors before the show starts on June 5th.