From IceFrog:
We want to try taking a different approach to how gameplay patches are released. Instead of big patches a couple of times a year, we'll be releasing small patches every 2 weeks on Thursdays. We'll be trying this out for about six months and then reevaluating.
The Spring Cleaning 2018 Update is full of bug fixes and a variety of quality-of-life improvements, this update also includes some small gameplay changes.
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