Today marks the official release of Bitcoin Core 0.13.0, the thirteenth generation of Bitcoin's reference client as first launched by Satoshi Nakamoto almost eight years ago.
Bitcoin Core 0.13.0 was developed by some 100 contributors over a period of about five months. And while much of the development effort over this time has also been focused on Segregated Witness, which will be activated only in a future minor release of the software, Bitcoin Core 0.13.0 includes about a dozen notable improvements compared to Bitcoin Core 0.12.0.
These are the most important changes.
http://www.nasdaq.com/article/bitcoin-core-0130-is-released-whats-new-cm668482