Back in Feb 2010, there was a number of news stories about an Apple Job posting regarding iOS (Iphone OS) onto other platforms.
I believe that some other platform will use iOS in the near future. I speculate it will be the AppleTv first and then later Macs..
I do agree however the the Touch Interface is problematic. My guess is that the new AppleTV/ITV will have to come with a remote or something to control it as part of the purchase price. They could include a Magic TrackPad, but I doubt that would be feasible If they truly want to give this a price point like $99. Maybe they will provide some sort of remote control similar to the current AppleTV remote to do basic navigation, and media consumption, but to play games and run most apps, you will have to either purchase a magic trackpad or use an Ipod Touch/Iphone as your touch interface.
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"Apple, in a job posting last week, advertised for an "Engineering Manager (Platform Bring-Up)" which states that Apple is taking their iPhone OS and putting it on new platforms:
The Core Platform team within Apple's Core OS organization is looking for a talented and inspired manager to lead a team focused on bring-up of iPhone OS on new platforms. The team is responsible for low level platform architecture, firmware, core drivers and bring-up of new hardware platforms. The team consists of talented engineers with experience in hardware, firmware, IOKit drivers, security and platform architecture.
Which platforms? There are so many. As TiPb points out today, the biggest no-brainer of them all is AppleTV. With the iPhone OS and a Apple's own processors, the AppleTV could be made into something much smaller and cheaper. AppleTV has been whittled down to one 160GB version which hasn't seen much action lately."
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iOS on an Apple TV? A VERY Bad Idea