I found 25 Wikipedias which are still at local v1 logo but have a v2 logo on Commons (sometimes only SVG).
Consensus was found originally when the logos were created (mostly by Casey, asking local wikis and users): it's a trivial but boring fix, I'm going to upload missing PNG versions and submit a patch now.
Images have to be protected on Commons before config is changed.
Version: unspecified
Severity: enhancement
URL: https://commons.wikimedia.org/wiki/Wikipedia/2.0