GrandCentral has been quietly released. Take it for a spin from your mobile phone, but don’t expect it to work from your computer. It hasn’t officially been announced, yet.

So, what’s so special about the mobile version? It’s basically a lightweight version of the full app, but it’s primarily meant for you to check and manage your voicemail. The basic features are still intact, plus you have the ability to access your phone book and make changes to your greeting.

Check out TechCrunch for the full deets. But remember, I didn’t tell you about this.