Interested in Language
Please explain to me the meaning of "in making" - the context in given below.
Now the Tim Cook era at Apple Inc. AAPL -0.91% really begins.
In a shake-up weeks in the making, Apple's chief executive this week made a series of moves designed to restore peace to a management team roiled by the death last year of company co-founder Steve Jobs, whose outsize personality had kept managers in check.
***NOT A TEACHER***
in the making - Idioms - by the Free Dictionary, Thesaurus and Encyclopedia.