We're not sure if this instantly makes the 6.4 inch Sony Xperia Z Ultra an only child, but Yoshiro said that the screen on that unit was too big and that some users find it too embarrassing to put up to their ear to use as a phone. The comment about a 4 inch device means that we could see that 4.3 inch Sony Honami mini that speculation has started up about. On Sunday, we passed along some rumored specs on the Honami mini that showed only two changes from the full-sized model. The only differences were in the screen size and resolution (5 inch, 1080 x 1920 to 4.3 inch, 720 x 1280) and with the battery (from 3200mAh to 2400mAh). Of course this is all very much in grain of salt territory since the Sony i1 Honami hasn't even been unveiled.
The comment about a 10 inch tablet is interesting as it could be hinting about a new model to replace the Sony Xperia Tablet Z. That slate was released earlier this year and carries a 10.1 inch screen, a quad-core 1.5GHz Qualcomm Snapdragon S4 Pro processor and 2GB of RAM.
Despite the comments from the Sony board member it could be some time before either device makes it way to the market.
Thanks, Anonymous Tipster!
source: Nikkei (translated) via TechKiddy