same reason why none of the other things are announced. Most of these things are commen sense . Others are things sony feels most people will never use .
I'm sorry but as nice as reading books on a psp is , i doubt many will read it .
Not to mention you can do this on all other media forms . I have while atlas shrugged on my ipod photo , I have the new star wars clone war book on my ngage 1.0 . These are things that can be done on any hardware even the gb . ITs just easier on a psp because of the memory stick . These are not things that will make average consumers go out and buy this system.
It falls like this
System seller
Games
Can sway the average consumer
movie play back
mp3 player
Things that don't really matter
ibooks , cell phone functions , fm broadcasters .
It also goes in order of how likely people are to use this for those features
also just wanted to add that the dc could play mpeg 4s but it was never announced by sega same goes for the ps2 and xbox .