Our old buddy Elvin has posted his preview of Heroes VI on RPGWatch:

"Heroes 6 has plenty of worthwhile additions and improvements over its predecessor, this cannot be denied. Despite its success, Heroes 5 was not without its issues - including a highly abusable and sluggish early game, battle outcome largely tied to chance, hero build being more decisive than your tactical skill, first turn slaughters being a very real possibility, certain factions dominating in early or late game, a non user-friendly editor, poor campaigns, even worse AI, poor optimization and problematic camera rotation. Heroes 6 is free of those issues."