New snapshot?

Apologies if I've failed to find this in the docs, but is there any official cadence for how often the PSL snapshot is updated and a new release made?

We tripped over this because of a material change under `.museum`: so now our online and offline tests get different results for one of our test cases, that happens to be in there.

Obviously our test case is our problem (and maybe offline tests of code that uses tldextract are not a great idea in the first place). But it would be useful to know if it's our problem for a while, or if you were due to update the snapshot fairly soon anyway.