Apple Maps vans and walkers were busy in Japan from May to October 2020 and the first cites to receive Look Around from the data sets are: Hiroshima, Fukuoka and Takamatsu. This is not part of the Apple Maps 2.0 ‘New Maps’ cartography that has rolled out in USA, Canada and UK, just the same lousy IPC map data with a Look Around cherry on top. According to Justin O’Beirn these were added in mid-December.
In addition to new areas he lists, the Look Around Tokyo area region has been extended deeper into the greater Kanto area with more Chiba, Saitama and Kanagawa coverage, though I don’t see any pedestrian data gains in areas that need it (major shrines, temples, parks, and other public areas off limits to vehicles). In the Kansai area, southern parts of Osaka and Nara have been added as well.
At this rate we should have Look Around additions for Sendai, Ishikawa, more Kanto and other regions coming soon. Apple Maps Look Around first appeared in August 2020 for Tokyo, Nagoya and Osaka regions from data collected in 2019.