Hylas X Ariane26 Jul 2017 18:15
Prime contractor OHB SE said the EDRS-C/Hylas-3 satellite, the second of the company’s new SmallGEO product line, is on track for delivery to its launch site in early 2018, but not before.
The best date available for Hylas-4’s launch is now “mid-to-late 2017”. The satellite has been built by Dulles, Washington DC-based Orbital ATK and will be launched on an Arianespace rocket.
Got these from different sites after googling Hylas X Ariane where X was (3 and 4) - if patience is a virtue we must be a very virtuous bunch ?