That's a dangerous mindset to have, especially for Apple's bottom line.
Apple revived their company on "the next big thing". The day their profit centers become an everyday commodity is the day their company starts to fall.
It hasn't happened yet, but Android is already taking the lion's share of new smartphone sales, which is currently Apple's #1 moneymaker. The only reason Apple's profits keep going up as their marketshare declines is because the room for growth in smartphone sales outpaces Android's growth within the sector.
well to think about it, all these current smartphone innovations were already existent in 2007, but not in touchscreen form.
My 2007 Nokia N82 had xenon flash, FM radio, wifi, tethering capabilities, IM, full mobile browsing, flash, social networking apps, turn by turn navigation, front facing camera, video call capabilities...
So in the past 4-5 years we've focused on improving UI and making it a touchscreen friendly device. I know that when the first iPhone came out I mocked it because it lacked the features of my N82. Over the past 5 years they've brought in changes slowly to match my phone.
The next big thing is a slow change. It'll be dictated by tech trends, which point to social networking, gamification, etc. as well as entertainment like home media, media server, PMP, etc. From now on there will still be innovation but expect it to move at a slower pace.