How long it takes to be served is based on NUMEROUS factors. The fact is: you have AT LEAST a year of worrying about whether or not charges are filed against you. You will be wise to have whomever resides at your "current residence" to keep you appraised of whether or not official documentation has been served to your last known residence.
AZ will track what charges you could be potentially faced with when they make the "arrest". They may charge you, or they may not. Regardless, the notes are there on your record. AZ does keep a public-access record of all court documents: http://apps.supremecourt.az.gov/publicaccess/
This will track the findings of the officers, most times, even if you have not been formally presented of charges.
If you have not properly been served any charges, then you are not likely being charged with anything. Arizona is QUITE the fan of SCARING you "straight". However, you should stay on top of tracking whether or not you are being charged. If you have an attorney: GREAT! utilize that service! If not, then you should keep checking with the courts to see if you need to make an appearance. Your ignorance of the need to appear in court will NOT be an affirmative defense to your situation, so do make every attempt to make sure you attend any court-required attendance.
