v0.4.0 [Sep 24, 2011]
The main feature in this release is wallet private key encryption; you can set a passphrase that must be entered before sending coins. See below for more information; if you decide to encrypt your wallet, WRITE DOWN YOUR PASSPHRASE AND PUT IT IN A SECURE LOCATION. If you forget or lose your wallet passphrase, you lose your bitcoins. Previous versions of bitcoin are unable to read encrypted wallets, and will crash on startup if the wallet is encrypted.
Also note: bitcoin version 0.4 uses a newer version of Berkeley DB (bdb version 4.8) than previous versions (bdb 4.7). If you upgrade to version 0.4 and then revert back to an earlier version of bitcoin the it may be unable to start because bdb 4.7 cannot read bdb 4.8 “log” files.
v0.10.0 [Mar 23, 2015]
- Faster synchronization
- Transaction fee changes
- RPC access control changes
- RPC Server “Warm-Up” Mode
- Improved signing security
- Watch-only wallet support
- Consensus library
- Standard script rules relaxed for P2SH addresses
- bitcoin-tx
- Mining and relay policy enhancements
- BIP 66: strict DER encoding for signatures
