3 Block III satellites have completed construction and have been declared "Available For Launch" (AFL).
After being launched, GPS satellites enter a period of testing before their signals are set to "Healthy".
Permanently retired satellites are sent to a higher, less congested disposal orbit where their fuel is vented, batteries are intentionally depleted and communication is switched off.
This information can be found in the IGS ANTEX file[permanent dead link], which uses the convention "GNN" and "GNNN" for PRNs and SVNs, respectively.
For example, SVN 049 is described as: whereas for PRN 01 the following excerpt is relevant: A table extracted out of the ANTEX file is made available by the Bernese GNSS Software.