The recent announcement of lower cost Windows Phones like the Lumia 610 brings with it a great opportunity for you to reach many more users with your apps.

See http://windowsteamblog.com/windows_phone/b/wpdev/archive/2012/03/07/optimizing-apps-for-lower-cost-devices.aspx for some high-level guidance regarding how to optimize your apps for these lower cost devices.

Also watch http://channel9.msdn.com/Shows/Inside+Windows+Phone/Inside-Windows-Phone-33--Windows-Phone-75-Refresh--60-more-Opportunity for some more context about the release and what it means for you and your apps.