I don't see anything in the change log or mentioned on the Pixel and Tonic website. Does Playa work with ExpressionEngine 3?
Brandon Kelly would definitely list it in a change log if it were released for EE3. I don't think he's actually published a road map for EE3 as of yet, but has tweeted that he is working on EE3-izing his add-ons. You can take a look at EE3 compatible add-ons on the https://www.devot-ee.com. Probably not 100% complete, but it'll be 99% of released EE3 add-ons.