The team at Myetherwallet has provided these handy links to help you with the new formatting of their wallet. If you want to display the balance of a specific token you must add the custom token into your wallet manually.
* The most up to date instructions on how to add a custom token can be found here: https://myetherwallet.groovehq.com/knowledge_base/topics/how-to-see-a-new-token-in-myetherwallet?from_search=true
* The list of token addresses / decimals / symbols is here: https://github.com/MyEtherWallet/ethereum-lists/blob/master/tokens-eth.json They are in alpha-order.
* You can learn how to check the balance of your account here. https://myetherwallet.groovehq.com/knowledge_base/topics/how-do-i-check-the-balance-of-my-account