During his keynote speech at Mobile World Congress in Barcelona, Microsoft CEO Steve Ballmer confirmed that the company will issue its first software update for the Windows Phone 7 platform in the next few weeks (early March). New features that will be introduced with the update, as specified by Microsoft earlier this month, include copy/paste functionality and better integration with Microsoft services like Bing and the Windows Marketplace. Microsoft’s CEO also confirmed that the update will bring CDMA support to the Windows Phone 7 platform, and that Windows Phone 7 devices will launch in the first half of 2011. A specific availability dates for the software update and CDMA phone launches were not provided during today’s keynote. Finally, Ballmer noted that a new version of Internet Explorer for Windows Phone 7 will become available in the second half of this year, as will a new, more robust multitasking solution that facilitates faster app-switching and adds several APIs for background processes. Don’t forget to check out our live coverage of the keynote for more details.