No current Mac. But still, iPhone OS running on Mac OS, sounds more of a disaster than good. Why? The iPhone OS is based on the ARM architecture; trying to rewrite it so it'll run half as decent would require lots of work and maybe a Rosetta like approach.
iOS is Mac OS X. The kernel can run on multiple processor architecture. Linux doesn't have any problems running on ARM, ia-32, ia-64, x86-64, etc.. Same as Darwin doesn't have problems running on ia-32, x86-64, ARM, and PPC back in the days.
UI Kit/Cocoa Touch are just higher level frameworks and the display server is userspace code. None of it requires particular knowledge of the underlying CPU architecture if properly coded.
Welcome to 2010 Operating systems design, where component re-use is the name of the game. BTW, OS X and iOS are already the same Operating System. Just like Android uses Linux with a custom userspace display server and some custom programming frameworks, iOS is just a Darwin kernel and a custom display server.
People asking for "iOS integration into Mac OS X" don't actually understand that both are already very much integrated. They want the GUI. The bad news for them is that the GUI concepts of iOS won't work on a desktop.
(I like the scrollbar in iOS, no need to have it there if you aren't scrolling)
Really ? I don't and I do need scrollbars visible even when not scrolling. The scrollbars serve a dual function. They obviously can be used to scroll the document, either using the clickable arrow buttons or by "grabbing and dragging". But with scroll wheels, who uses them that way anyhow ?
However, something scroll wheels on mice can't do is visually inform you of how much page there is still left to scroll. Scrollbars are a visual queue to how much more there is to the page you are reading or the document you are reading. Would you know to scroll horizontally if there was no horizontal scroll bar ? Would you try it every time ? Don't you like quickly seeing if there's a lot or just a little more info on a page without having to scroll it entirely first ?
I sure do and many others do. And you won't realise it until your scrollbars go away. It's actually a beef I have against iOS, forcing to scroll through all the time.
Agreed and other then adding some iOS type funtionality, I don't see what else apple could/would do to update the OS
Uh ? There's plenty to do. Just on the storage front, Apple is so late. Partition based storage definitions are a concept of the 80s that died somewhere in the 90s to everyone but the consumer. It needs to die now. Volume management is both superior and easier to deal with. That is one example of something that could be done in OS X 10.7.