Not ImageReady. Extended.

When Adobe punted ImageReady with this version of the software, some pieces of that product ended up in Photoshop, some landed on the cutting-room floor, and some went into an Extended version of Photoshop, including the frame-based animation tools. Photoshop Extended also has a basic timeline view, which supports keyframing of opacity, position, and style, as well as changes in global lighting over time.