It looks like the link they provide for comparing the source of 3.0 and 2.7 is busted on Github, but you can get a sense for the scope of this on GitClear's Ope

It looks like the link they provide for comparing the source of 3.0 and 2.7 is busted on Github, but you can get a sense for the scope of this on GitClear's Open Repos https://www.gitclear.com/open_repos/ruby/ruby/releases https://www.gitclear.com/open_repos/ruby/ruby/releases. Looks like about 4x more repo evolution has gone into this version than previous. See also: list of the biggest tickets tackled in 3.0: https://www.gitclear.com/open_repos/ruby/ruby/release/pending_release https://www.gitclear.com/open_repos/ruby/ruby/release/pendin...