Michelle Obama delighted her fans this week when she shared some incredibly "exciting" news about her 2018 memoir, Becoming.The former First Lady penned a lengthy post on Instagram, alongside a clip of some of her memorable moments throughout her career, to reveal that two new editions of her book are coming next month!MORE: Michelle Obama receives unexpected gift from First Lady Jill Biden - surprise!She began: "I’m so excited to share that we are releasing new young readers’ and paperback