We told you last year about Zello (Previously LoudTalks) releasing a free beta of their Push to Talk app for BlackBerrys. BBNews.pl noticed that Zello has finally gone official in App World offering cross platform push to talk walkie talkie like capabilities for BlackBerry users. Right now the service seems to be free and hopefully it will stay that way. Zello has clients for PC, BlackBerry, and Android with iPhone support coming.
