No, this does not immediately mean Guardian cards or Ancient Fairy Dragon cards
Deck Build Pack: Ancient Guardians
The latest Deck Build Pack, designed to let you build a Deck straight out of the pack, will go on sale March 6th 2021. It will include cards for three different themes.
Release Date: March 6th 2021
Price: 150 Yen for 1 Pack of 5 Cards; 15 Packs per Box
Further information will be revealed via V Jump and Weekly Shonen Jump