Google Voice app coming for BlackBerry and Android phonesThis article contains unofficial information.
With the app, users can make calls directly from their cellphone. No longer will the outgoing number have to be dialed in as the contacts list on the device can be used to get the information. Those receiving the call will see the users' Google Voice number rather than the mobile phone number. Text messages will also show up as coming from the Google Voice number. The app will also allow the user to hear voice mail and read transcripts of them together in what Google calls "karaoke style" with the word being read highlighted on the screen. All of these new features are available only to those limited Google Voice users. Last month, the company started sending out more emailed invitations to join the service from a list of those who requested to be members.
As for now, the service costs nothing and is part of Google's strategy to compete with Skype. As far as an app for the iPhone, Google says it is in talks with Apple, but for now, Google Voice can still be accessed through mobile Safari.
source: NY Times