So, at WWDC Apple finally announced HEVC (and a variant for stills, High Efficiency Image Format). New Macs also have hardware-level HEVC handling. Question is, how much of an improvement are we going to see with our existing Macs? And does the just-released MacBook Pro with on-board compatibility already work or does it also need the OS upgrade? Can't wait for HEVC on Final Cut Pro X. Lightroom can go to hell if it doesn't catch up.