Henceforth the paper's news stories will have justified text, meaning that they have an even margin on both left and right. Stories that include any analysis or opinion will have a ragged right margin, in which most lines end before reaching the right side of the printed column.
The only exception will be the editorial pages, where the justified margins will remain.
The newspaper's editors say they do not expect the change to be obvious to most readers, but they think that it will have a "subliminal effect" in providing readers unconsciously with the critical distinction between news stories and opinion or analysis.
Perhaps.Noting that many readers had expressed confusion and dismay over the frequent inclusion of reporters' opinions in what were ostensibly news stories, and the resulting impression that the newspaper was surreptitiously trying to inculcate readers with a left-wing bias, the Times's "credibility committee" recommended the slight redesign.
From Karnick on Culture.