Sprint customers seeking the benefits of <A HREF="http://press.rim.com/release.jsp?id=1792">push-to-talk services and the power of BlackBerry</A> smartphones will have a new version of the coveted combo available later this year. Sprint and Research In Motion announced plans to deliver the BlackBerry Curve 8350i--the newest Nextel Direct Connect-capable BlackBerry smartphone--by the end of 2008.