A recent Avengers 4 concept art still collection shed some light on how the remaining Avengers may be looking in the upcoming fourth movie, however Black Widow was missing from the set.
However we have now been given the concept art still for Natasha Romanov and it has detailed what we can be expecting her to be looking like when she shows up to take the world back from Thanos in 2019.
As you can see, Black Widow has gone back to her classic, red headed hair colour for Avengers 4 which feels appropriate given that there is the potential that this could be the final time we see Black Widow in the MCU. Natasha changes her hair in every movie she appears in and this time she has a pony tail which is a very different look that we have never seen before and it certainly looks good.
Overall Black Widow is looking to be a great addition in Avengers 4. It will be interesting to see how her and Captain America continue their Secret Avengers project and also how she will interact with her old friend Hawkeye who will be returning in this movie. Either way Avengers 4 is going to be extremely exciting and we cannot wait!