Not sure if they're new or not, but there are some explanation texts for the calendar:
Code:
ARCH21|Click to open this Slot now and claim your reward!
ARCH21|Find a Gem in the sand today or use Gem Shards to open this slot now!
ARCH21|Use Gem Shards to open this Slot you missed.
ARCH21|Wait for new slots to unlock each day of the Archeology Event!
ARCH21|You already have enough Gem Shards. Use them to open missed Slots.
ARCH21|Find Gem Shards in the Sand or buy the missing ones to open missed Slots.
This seems very much like it's a return of the 2020 Winter Event calendar, especially considering this:
Code:
ARCH21|You haven't found today's Gem for this slot yet. Get the %d missing %s to open this slot now?
ARCH21|You haven't found today's Gem for this slot yet. Use your Gem Shards to open this slot now?
WIN20|You haven't found the key for this door yet. Get the %d missing %s to open this door now?
WIN20|You haven't found the key for today's door yet. Use your Lock Picks to open this door?
The functions to create the
Archeology event texts are even called "_createConfirmationNo
Lockpicks" and "_createConfirmationWith
Lockpicks", same as for the Winter event.