Newscradle.com

Maybe feeling the pressure from Congress and some consumer groups, Verizon wireless, the U.S. largest carrier in term of subscribers, shocked the cell phone world by announcing last month that it will in the future, limit the length of its exclusive deals with handset manufacturers to no more than six months.
The new measure would opens the doors for small wireless carriers to the most sought after and therefore profitable handsets in the market. However, the new arrangements would not affect existing deals like Verizon's exclusive one to carry the Blackberry Storm made by Research in Motion Ltd. Also, some mid-size carriers like Virgin Mobile and U.S. Cellular Corp do not qualify to benefit from the measure.
Other large carriers have yet to respond to Verizon latest move, but you bet they do not have a choice but to follow suit.

For more, see WSJ.com