After being temporarily removed in earlier responsive versions, scroll effects (like parallax) were reintroduced specifically for fixed-width breakpoints.
This specific sub-version (2015.2.1.21) focused on stability, fixing issues related to Adobe Camera Raw (ACR) installation conflicts and improving Google Page Speed by enabling asynchronous JavaScript loading and browser caching for FTP uploads. Current Availability Adobe Muse CC 2015.2.1.21
A major workflow improvement that allowed users to select an object and drag a handle to move it and everything below it simultaneously, saving time when adjusting long page layouts. Adobe Muse CC 2015.2.1.21