There are a number of possible outcomes. A complaint may be dismissed, resolved through a letter of caution, referred to an investigative panel of the Commission on Lawyer Conduct, resolved through an agreed disposition, or result in formal disciplinary charges.
Which outcomes are available depends on the facts, the seriousness of any misconduct, the harm caused, aggravating and mitigating circumstances, and other factors. One important part of discipline defense is evaluating those possibilities before deciding how to respond or whether a negotiated resolution is appropriate.