I'd say it's newsworthy to large Go shops that use spaces with gofmt and now have to change indentation in their repos. This isn't insignificant. Also it requires additional flags for things like blame/diff to ignore whitespace changes.
Is it that unbelievable to you that a company that previously used other languages with spaces for indentation would desire to have a consistent indentation policy, especially considering that up until now the tooling supported such desires?
Oooh yes they do. GP and I both happen to work for one. :-)