The latest pair rumored for a 2019 drop is the "Splatter" Air Jordan 4. While no official imagery of the upcoming release has surfaced yet, it is projected to look very similar to a leaked pair based on a 1989 sample that sports a black suede upper, "Nike Air" branding on the heel tab, and a red, black, and white splatter paint graphic on the heel and midsole.
Most recently, this colorway surfaced back in 2017 when then-endorsee Drake showed off some of his rare pairs on Instagram, and was later revealed to have OVO detailing. According to @pinoe77, the "Splatter" Air Jordan 4 is slated for a February 2019 release as a part of a larger pack. It is yet to be confirmed if it will also drop in men's sizing.
NOTE: The pair pictured below is a past sample and is not confirmed as the 2019 retail version.