Gartner has come up with a report about 5 trends that will impact the mobile devices market in 2009. These are

Established Vendors Consolidate and New Players Enter the Fray
Device Vendors Build Out Ecosystems
Device Makers Focus on Removing Complexity for the User
Mobile Devices Increasingly Become Lifestyle Statements
High-End Device Platforms Become “Field-Refreshable”

Look interesting. However the full report is a paid one. If any one has gone through it then do leave your comment.

full report available here