Some time ago, the source posted (citation):

Intention to Revise: Monthly retail sales, inventories, and inventories/sales ratios will be revised based on the results of the 2017 Annual Retail Trade Survey. Revised not adjusted estimates and corresponding adjusted estimates are scheduled for release on June 25, 2019 at 10:00 a.m. EDT.

The routine annual revision is performed between the June and July editions. The last data point for most series is April (2019m4), and for the "Advance" series, May. The revision intervals are:

• Retail and food services sales:
• Unadjusted, 2013m1 to 2019m5
• Adjusted, 2010m1 to 2019m5
• Inventory and inventory/sales ratios:
• Unadjusted, 2011m1 to 2019m4
• Adjusted, 2008m1 to 2019m4

Update, 1 July

This release contains two seasonally adjusted supplements, which we overlooked during our initial update. The revisions start at 2012m1. The series are:

• WRLSL452111CM.IUSA = Sales at department stores excl. discount department stores [452111]
• WRLSL452112CM.IUSA = Discount department stores [452112]

References

• Monthly Retail Trade
• Annual Revision of Monthly Retail and Food Services: Sales and Inventories—January 1992 Through May 2019
• Data files for sales:
• Revised through 2019m4 (xls)
• Benchmark through 2019m5 (xls)

• 25 Jun - Initial version
• 1 Jul - Updated SA series