Here are the new artifacts that Qeddwyn added this weekend:

Four new artifact weapon increases: blunt_power, cutting_power,
serration, and targeted_power. The first two increase your blunt/cutting
respectively damage by 5%. Serration gives your weapon a 1/3 chance of
increasing bleeding by 3x. Targeted_power adds 5% bodypart damage to
standard targetted weapon attacks.

Keyrings can only be used by the owner. They allow you to amass all your
keys on one ring, and only the owner can ATTACH <key> to keyring or
REMOVE <key> from keyring. They also reset to you.

Chaotic Globes and Holy Emblems half essence and devotion costs
respectively.

Claws of the predator come in three levels, and allow you to increase
damage from ferality attacks by 5, 12, and 19% for each of those levels.

Paired Lockets allow you to touch another paired locket to pair them.
(TOUCH <locket> to <locket> as long as both are in your inventory.) The
owner of each locket is then able to TOUCH it to transport themselves to
the location of the other locket.

Harvesting gloves cut the balance from harvesting in half.

Collars of Domination allow you to dominate an entity permanently. One
collar/entity. See HELP ARTIFACTS_MISC for details.

A letter satchel gives you unlimited letters, so you can start whatever
pyramid schemes you can think of!

For houses, three things were added:

Obscuring Fog lets you hide from most tracking abilities, and will hide
your location on the who list.

Hidden rooms will remove any person inside it from the who list
completely.

Graveyards are now able to be added to a house.

HELP ARTIFACTS, HELP HOUSES and the associated files will help you find
all the details about these!

Belakai

Penned by my hand on the 12th of Midsummer, in the year 190 MA.