Some news reports on the railway from Khaf in Iran to Herat in Afghanistan have appeared, although I can’t spot English-language versions.
کار امتداد راه آهن ایران به داخل افغانستان بزودی شروع میشود https://t.co/lxbF9qO7OE
— BBC Persian (@bbcpersian) June 16, 2016
Using Google Translate, I think the Fars News report about progress with the railway says that the 76.8 km from Khaf to the border has been finished. It is suitable for 160 km/h passenger and 120 km/h freight trains, and services could start in October[?].
A BBC Persian article possibly says that Iran’s consul general in Herat, Mahmoud Afkhami Rashidi, has said that [construction, track-laying?] work on the Iranian border to Ghurian third section of the railway will resume after Eid al-Fitr [6 July 2016]. The fourth stage of the line will be built by the Afghan[?] government and take the line to an industrial area in Herat[?]. The governments of Afghanistan and Iran have recently held talks about security and technical co-ordination for the construction of the line.