Early, as in the early stages of something. Usually preceded by “it’s” or “it’s still.” Paul Gigot: “It’s early days. It’s still early days.” Arthur Laffer: “It is early days.” (Fox News Broadcast, April 13, 2009.)/”Still, it’s early days. I want [New Jersey Governor Chris] Christie to rise to full truth-telling from half.” (Matt Miller, Washington Post, February 23, 2011) Google Ngram.
Is it still early days for “early days”?