The Bitcoin Core development team released the newest version of the main Bitcoin implementation, Bitcoin Core, on July 12. Bitcoin 0.11.0 includes several improvements over older versions, making the software easier to use and better adapted to current network needs.
One significant addition to this latest release of Bitcoin Core is the option of block file pruning. In essence, this allows users to rid their version of Bitcoin Core from all data included in older blocks that aren’t necessary to run a full node. As such, it is no longer needed to locally store the full blockchain, but instead limit this to (a minimum of) the latest 550 blocks.
This comes in handy for users with limited space on their hard drives, as the full blockchain is currently nearing 40 GB in size, while the latest 550 blocks can be 550 MB at most. It should be noted, however, that block file pruning is not yet available for users of the Bitcoin Core wallet software — though it will be in future releases.
The newest version of Bitcoin Core also includes an improved fee-estimation mechanism. This means that users will be better able to add the correct amount of fees