Jerry Yang co-founder and Chief Executive of Yahoo will announce that it is redesigning it's mobile home page. It will open the platform to allow outside programmers to develop "widgets" for mobile phones. This move is probably an attempt to keep up with Google and there anticipated release of Android later this year.
Yahoo will also release an upgrade to it's "GO" software to enable easier web surfing on your mobile phone. I use "GO" myself and it's a great feature for checking your Yahoo email,news, traffic reports and more. Also if you have a Flickr account you can upload/download pictures to/from your mobile device.