All AMD GCN GPUs Are DirectX 12 Ready
During AMD’s 30 Years of Graphics Event their product manager, Devon Nekechuk, confirmed that all AMD GPUs built on the Graphics Core Next (GCN) architecture will support DirectX 12, Microsoft’s next generation multimedia API. This means that all graphics cards from the HD 7000 series and the Rx 2xx series will be able to support DirectX 12. APU users with Kaveri APUs will also be able to take advantage of DirectX 12 since Kaveri APUs are also built from GCN graphics. AMD is already up to date with DirectX as it offers DirectX 11.2 support for all its GCN products. AMD wasn’t too keen to push the support for DirectX given it is still working heavily on its rival API Mantle.

Source: TechPowerUp
Image #1 courtesy of Microsoft, Image #2 courtesy of AMD
Will my amd 6970 be able to upgrade to X12?
did you even bother to read the article?
just go 4k gtx 960-980 series. amd could not activate dx12 on r9 windforce 390x gaming 1 oc version. dont buy winforce version of it. i has somehov febrick error inside it.