We're quite transparent about what we release and when - spikes can be easily attributed to events on https://www.mediawiki.org/wiki/Reading/Web/Release_timelin

We're quite transparent about what we release and when - spikes can be easily attributed to events on https://www.mediawiki.org/wiki/Reading/Web/Release_timeline https://www.mediawiki.org/wiki/Reading/Web/Release_timeline if you are interested in what caused them!