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+== Chapter 1 - What is Bitcoin?
+* Updated Bitcoin history
+* More user stories and updates
+* More examples of bitcoin uses and clients
+* Updated guide on how to get, use, spend bitcoin
+
+== Chapter 2 - How Bitcoin Works
+* Many small changes, updates and improvements
+
+== Chapter 3 - Bitcoin Core
+* Improved and updated examples and code
+* Configuration options and examples
+* Running a bitcoin node
+* Updated libraries
+
+== Chapter 4 - Keys and Addresses
+
+* Many small improvements
+* Improved and new diagrams
+
+== Chapter 5 - Wallets
+
+* Much more detail on BIP39 Mnemonic Code Words
+* BIP39 Passphrases and use-cases
+* Using public extended keys on an e-commerce server
+* Improved and new diagrams
+
+== Chapter 6 - Transactions
+
+* Transaction Structure
+  * More detail on inputs and outputs
+  * Transaction serialization/deserialization
+
+* Transaction Fees
+  * Dynamic fees
+  * Fee estimation
+  * Third-party fee estimation services
+
+* Digital Signatures
+  * Signature creation and verification
+  * Signature serialization (DER encoding)
+  * SIGHASH flags
+  * ECDSA Math overview