"How would I even know that there's a development release if I hadn't written it and uploaded it myself?"

Your upload seems to have an issue. https://metacpan.org/about/missing_modules:

Is it in the index?

MetaCPAN uses the PAUSE-generated 02packages.details.txt file. If it's not in there, then the module author will need to fix this. (Authors are usually emailed about this when they upload a distribution).

Also All-lowercase name.