This week's Dragonflight Patch 10.2.5 PTR build introduces some new Archivist's gear, including two backpacks, a chisel, and a gun!
Historian's Hefty Habersack — Excavator's Pack of Findings
Archivist's Stone Chisel
Archivist's «Light Touch»
Available in two color schemes, the backpack matches the Unearthed and Explorer sets discovered a few weeks ago, which also included several archaeology themed weapons like picks and torches. The chisel in today's build appears to fit in along with those tools, though the gun stands out as a «real» weapon… but you can never be too careful while out on a dig, especially in Azeroth!
Although it already seemed very clear that these would be related to the upcoming Azerothian Archives activity coming in Patch 10.2.5 the Historian's Hefty Habersack confirms it — requiring Tenured, the highest of five ranks within the Azerothian Archives faction.