Sony drops the U50 and U70?

They never even properly came out here (a few shops importing them doesn't count as a proper release), but Sony is confounding everyone once again and discontinuing those ultrasmall U50 and U70 tablet-style PCs they released in Japan earlier this year (we had a review of the U50 back in July). Four month or five months isn't exactly long for a product cycle, even in Japan, so either they sold out and have something new coming out or they just weren't getting enough love for these to keep on keepin' on.