It was named, appropriately, Confines. It was a monthly publication like Scorecard Extra and Gameday. The page count dropped, however, from the 50 in Gameday to 37.
I am just getting one of these per season, instead of all six.
The 2019 editions are the only ones so far. No fans were allowed at Wrigley in 2020 due to the pandemic, so no issues of The Confines were published last year. I'm really looking forward to seeing the April, 2021 edition.