Recent Updates to the rulebook include:
Changed the order of rules, steps, and phases.
Removed glossary on the back and added a "Quick Reference Guide" to help clarify rules and make the rulebook less cluttered.
Rules added/updated:
Regroup - When you end your turn without playing a card, you may discard a card then draw two cards.
Added a mulligan rule: After drawing starting hands, each player may choose up to three cards, set those cards aside, draw that many cards, then shuffle the cards set aside back into their deck.