Between the lines: This doesn't solve the partisan dispute over abortion language, as it'd bar plans that offer abortion coverage from receiving federal subsidies. But it hints that there's Republican support behind a set of policy changes that could substantially lower premiums ahead of the 2018 elections.
I wrote an extensive piece about the way abortion coverage is currently handled for ACA exchange policies back in October 2017:
In U.S. politics, the Hyde Amendment is a legislative provision barring the use of federal funds to pay for abortion except to save the life of the woman, or if the pregnancy arises from incest or rape. Legislation, including the Hyde Amendment, generally restricts the use of funds allocated for the Department of Health and Human Services and consequently has significant effects involving Medicaid recipients. Medicaid currently serves approximately 6.5 million women in the United States, including 1 in 5 women of reproductive age (women aged 15–44).
...The 2016 platform marked the first time the Democratic platform had an explicit call to repeal the Hyde Amendment. On January 24, 2017, the House of Representatives passed H.R. 7, which, according to the press office of Speaker Paul Ryan, "makes the Hyde amendment permanent."