IBM's Qiskit Runtime was recently made available to a select group of users. Have they announced when it will be available to all users or when they might open it back up to a second round of new users?
In Sept. 2021, they announced that the Qiskit runtime has been enabled on all IBM Quantum systems on slack. Follow this link for more https://qiskit.slack.com/archives/C8GLMQ1U5/p1631806010144500. There also exists a jupyter notebook in the qiskit-tutorials folder where you can find, how to give your own program to the qiskit runtime service.