Is this up for Pre-Sale?
I couldn't see it on the Chaosium webpage, but eBay seems to think it's a thing...
https://www.ebay.ca/itm/Runequest-RPG-PRESALE-Roleplaying-in-Glorantha-deluxe-slipcase-set-New/192676017711?hash=item2cdc62b62f:g:6D0AAOSwK0pbsjJV:rk:4:pf:0
https://www.ebay.ca/itm/Runequest-RPG-PRESALE-Roleplaying-in-Glorantha-Gamemaster-Screen-Pack-New/382588612142?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20180124153937%26meid%3D0446bc917ce14811a32e0636f1a