If they decide to use the Core M cpus, be prepare to be underwhelmed with performance!
Over the holidays I decided to get a new W8.1 tablet/convertible and was prepared to get the Surface Pro 3.
Went to BestBuy in the Kansas City area and looked around the displays and decided that the Yoga 3 Pro was a better idea. Better pricing, VERY light and the 13.3" screen was attractive. So I bought it. Set it all up and was underwhelmed by the performance. Too laggy at times and just very irritating. Still loved the look and lightness, but the performance was worse than my SP1. So I took it back and got the SP3.
Loved the SP3 overall, but in the end the price point was too much money for not enough computer IMO. Took it back.
Got the Lenovo Yoga 2 Pro, i7/8Gb/256Gb. Yeah a little heavier than the Yoga 3 Pro, but about the same weight as the SP3 with keyboard attached. Love the 16x9 screen, though I know some don't. Performance much, much better than either the Yoga 3 Pro or the SP3 i5/8Gb/256Gb. Keyboard is much better than the Type Cover and it folds back just like the Type Cover. Only downside is you can't separate the keyboard.
Unless something changes with the Core M CPUs, I wouldn't have another box with them, certainly not a premium priced one.
Oh yeah, the Yoga 2 Pro i7/8Gb/256Gb is only $999 at Lenovo's site which doesn't hurt either!!