We've already heard about HP's plan to take webOS open source, but since that announcement last month it's been all talk and no action. Now the company is back with some evidence that webOS is still evading the grave. Today, HP said the platform will be completely open to the developer community by September 2012.
HP also announced Enyo 2.0, an update to webOS' app-creation tool that now lets developers create programs across different mobile platforms and browsers. The source code for Enyo 2.0 is available now.