The SS-520 No.4 launch experiment was conducted at 8:33 AM on 15 January 2017.
JAXA held press breifing on February 13th on the results of investing the failure of the SS-520 No.4 experiment and measures to be taken.
Recording of the press breifing is available.
http://fanfun.jaxa.jp/jaxatv/detail/9594.html
