How Constant Change Will Keep Hearthstone's New Mode Fresh

Hearthstone's new Twist mode looks to provide a different experience than Standard or Wild--or the defunct Classic--by providing constant new deck-building challenges.
Hearthstone is a free-to-play digital strategy card game where you can choose one of nine epic Warcraft heroes to play as.

If I save my Standard packs until the new rotation next year, will they contain the current standard cards (last 2 years of expansions) or will they change to contain the new

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A look at the current state of the Hearthstone Battlegrounds metagame

With 11 classes, 3 game modes (Standard/Twist/Wild) and somewhat frequent patches, I feel 27 deck slots just aren't enough anymore. I have to constantly delete decks. : r/hearthstone

Hearthstone Galakrond's Awakening guide: how to beat Chapter 1

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A New Way to Play — Hearthstone — Blizzard News