Thanks Dave The full proposal had it listed better. Using the term of card level vs Archon level.
2.) The card level ranges for each of the new brackets will be defined as follows:

Common LVL Rare LVL Epic LVL Leg. LVL
Novice 1 1 1 1
Bronze 1-3 1-3 1-2 1
Silver 2-5 1-4 1-3 1-2