On my iMac, I have both Photoshop CC (square edges) and Photoshop (round edges). I prefer CC. On my new laptop, I can't download Photoshop CC, I can only download the other one (Adobe Photoshop 2020). One way to tell, among many, is that the Export As function has a drag bar for Image Quality, instead of percentages you can choose. The Export As function also loads incredibly slow, even though I'm on a brand new computer.