A lot of the time the next generation of a devices line get lighter and thinner and the components more energy efficient.
But as they do this the battery size is reduced with it - so the run time of the device remains roughly the same.
I wish they made the SP 5 the same thickness as the SP 4 or even the SP3 if it meant a bigger battery added with the newer more energy efficient processors etc. Then you would get a true 10 hour device - that would be amazing.
As someone else commented this obsession with ppi on a 12 inch screen the SP 4 has plenty. Every ppi upgrade eats into your on the move play time.
I don't think the SP 5 will get thinner, as I remember reading an article where a spokesman said they could of made the SP 4 thinner but they couldn't without removing the usb port. I can't remember the source of the quote sorry - but it makes sense.
Also the SP 4 m3 has a 'big' gap were the fan would go if it needed one - as you probably know it doesn't. MS could of squeezed 10, 000 juicy battery mah in there easy - then I would of thought about buying the m3 over the i5, it probably would of run for days! Haha
I loved the idea of a new pen with a lid, lazer pointer and a scroll wheel. What an addition for presentations and page scrolling /clicking as you surf the Web on the sofa.
But this has to be a new product - as a graphic designer messing with the 'old' pens shape and feel would be bad news. We should all group together and get a nice Chinese firm to build this new pen and so I've been reading Kristal's Surface cover / screen protector.
Thanks for your comments they're very helpful and enjoyable.
All the best Steven