He is to bid Turgon to prepare for battle with Morgoth; for Ylmir will turn the hearts of the Valar to forgive the Gnomes and send them succour. If Turgon will do this, the battle will be terrible, but the race of Orcs will perish, and will not in after ages trouble Elves and Men.
In this version, Turgon's stubbornness didn't only doom Gondolin, it lost a chance to eliminate the race of Orcs entirely from Middle-earth!
