At an as-yet-unknown date sometime in 2013, Apple's Senior Vice President, iOS Software Scott Forstall will be leaving Apple. Forstall's role is being reduced immediately, and Jony Ive will be taking over leadership and direction for Human Interface. The other aspects of Forstall's position will be doled out to various other members of Apple's existing executive team.
Forstall had been primarily responsible for Apple's increasingly skeuomorphic UI design, and his departure could very well mean that drastic changes in the look and feel of Apple's software aren't far behind. If you're attached to your virtual leather calenders and lined legal pad note applications, get ready to start letting go.