Filed under: CellphonesFor now it's not much more than a plan to announce a plan within the next few weeks, but since it involves Google and cellphone networks, we'll take it. The Wall Street Journal has the news that Google will announce its mobile offerings within the next two weeks, which could take the form of hardware, software packages, or -- most likely -- an open platform for phones that third party developers can build on. Interaction is the key word here: Google's platform won't involve locking down features, rather, it'll o