The newer and “cleaner” look of the iOS now (from Jony Ive) is better and more in style now. Looking back at the previous style ... really makes the iOS look OLD!
By the new style do you mean Yosemite? My Mac keeps asking me whether to update to Yosemite and I keep putting it off in part because I’m not sure whether I’ll like the new look (haven’t seen enough to decide either way).