It's called "going with the times" or "following trends". The logos are still sufficiently distinct, but the old ones all looked outdated. My favorite example

It's called "going with the times" or "following trends". The logos are still sufficiently distinct, but the old ones all looked outdated. My favorite example for logo updates are car makers because they're all so conservative with them. In the last 20 years they all had 3D-shaded logos because that was hip and cool (I guess), but nowadays it looks outdated and cheap (like the old tech logos), which are usually not associations you want for your products.