CBRE and JLL always put out great reports. Here is the CBRE report.
http://cbre.vo.llnwd.net/grgservices/secure/US%20Real%20Estate%20Market%20Outlook%20Annual%202020.pdf?e=1582060267&h=b94959e5118a5c9761b0c6b6545228a7
Would it be this one?
https://smartasset.com/mortgage/undervalued-cities-2019
Looks like it came out in June last year, I would guess it will be out around the same time this year.