Changes: - Fixed a wallet.dat compatibility problem if you downgraded from 0.3.17 and then upgraded again - IsStandard() check to only include known transaction types in blocks - Jgarzik's optimisation to speed up the initial block download a little
The main addition in this release is the Accounts-Based JSON-RPC commands that Gavin's been working on (more details at http://bitcointalk.org/index.php?topic=1886.0). - getaccountaddress - sendfrom - move - getbalance - listtransactions