And yes, From Software is working on the remaster, making this its second title announced at E3 2018 following Sekiro: Shadows Die Twice.
As for Sekiro: Shadows Die Twice, it will release in Spring 2019 for Xbox One, PS4 and PC.
Continuing its tradition of unexpected announcements and shenanigans at E3 2018, Devolver Digital revealed that Metal Wolf Chaos XD would be releasing later in 2018 for Xbox One, PS4 and PC.
Even more interesting is that Devolver Digital talked about bringing back Metal Wolf Chaos in 2016.