It supposedly launched its production process in New Mexico in February, and is set to make its TV premiere on AMC at some point in the future.
Even after that point, though, Aaron Paul still wasn’t confirmed to be involved, so it’s still just an assumption that the project is centered on Jesse Pinkman’s post-escape.
To give Bryan Cranston a bit more credit in that department, not even Vince Gilligan has been very up front about what the Breaking Bad movie will be about, with news mainly coming through piecemeal rumors.