Where is my GC after stamp

My passport has been stamped on June 2nd. On June 18, I received an email from CSC that said that “Type: I485, Application to Register Permanent Residence or to Adjust Status: Processing for your Alien Registration Card or Green Card has been completed. Your BCIS document will be mailed to you as soon as it is ready´ I am not quite understanding this email.

I485, I think, is for status adjustment. Why did they tell me now it is Application to register permanent residence?

Second, how long I have to wait for my former GC since I received this email?

Is this email meaning the card has been mailed out or it is inpending?

Please help