User blog comment:Kogath/Monster Hunter Stories Discussion/@comment-26421638-20180228092326

Unpredictable release schedule strikes again! Today we got, possibly, the latest DLC quest:

With the only difference that rewards a Silver Rathalos-Themed outfit for Navirou and a Training Charm+ for the first time. I don't know what gives afterwards, i may edit this comment later.
 * Slay a Silver Rathalos: This quest is in Pondry Hills and works exactly as the Gold Rathian one. This is a renamed Silver Rathalos with no breakable parts, egg with random genes etc.

Still a simpler way to Farm Silver Los' materials and eggs.

Well, in JPN Version the latest DLC quest was Fatalis (released to us 3 days ago), in NA/EU Verison this might be the latest DLC quest, let's see when (or... If...) the famous update comes.