Comment # 2 on bug 1172521 from Thorsten Kukuk

(In reply to David Walker from comment #1)
> Upgrading to the 2020-06-02 Tumbleweed snapshot resulted in the creation of
> a /etc/localtime.rpmnew link to /usr/share/zoneinfo/UTC, I suspect because
> of this.  Luckily, it didn't overwrite my existing /etc/localtime link to
> /usr/share/zoneinfo/America/Los_Angeles.

You got a "*.rpmnew" file, so everything is fine and working as expected and
designed. This means: /etc/localtime was changed in the package, but since you
changed it, your changes got not overwritten. And never will be ("config
noreplace"). So it did not overwrite your existing file "luckily", but by
design.