There are rumors that the LEGO Overwatch theme will be canceled, so it is possible that we will never see the third wave of this collection.
The BrickFan website announces that the LEGO Overwatch theme may be canceled. Six new sets were planned before the end of 2020, but it is believed that these will never see the light of day. A possible alternative is that which foresees a postponement of the 3 series caused by a delay in the release of the Overwatch 2 collection. It could present a situation similar to that which occurred for the models dedicated to the animated film Minions: the rise of Tower crane.
We should remain in doubt until there is an official announcement from the LEGO group.
Currently the LEGO Overwatch D.Va & Reinhardt (75973) set has been lowered from € 39.99 to € 33.99 on LEGO.com. Two sets were released towards the end of 2019, Junkrat & Roadhog (75977) and Wrecking Ball (75976), which expanded the number of video game-inspired models currently available.