In a posting on their website, the Arizona Department of Revenue announced that Forms A1-R and A1-APR (and any relevant 1099/W-2G/W-2 forms) will be due January 31, 2018 for tax year 2017. This change is effective for tax year 2017 and forward, and brings the filing date in line with the federal standard.
While the Arizona DOR has not published updated Forms A1-R or A1-APR for tax year 2017 as of this writing, you can review the news article on their website by clicking here.