New in this release:
A limited size memory pool to help you avoid out-of-memory conditions during transaction floods. There is a flood currenly ongoing, with about 140mb of data in the memory pool across 10,000 transactions. XT 0.11B has a -maxmempooltx flag that can be set to the maximum number of transactions you are willing to tolerate. For instance setting it to 10,000 would keep your mempool at roughly the current size.
Please note that the default is 50,000. In this release, the memory pool is limited by number of transactions and not size in bytes. So you may wish to adjust the default downwards on low memory systems.
For miners: restores compatibility with cgminer and other tools that can't handle UINT64_MAX in JSON output.
Now defaults to trusting the local system clock to avoid malicious peers attempting to drag the nodes clock out of sync. Can be controlled with the -trust-system-clock flag.
For users who are worried about DDoS attacks, or have experienced such attacks, there is now a -stealth-mode flag that makes XT appear like Bitcoin Core on the network level. In this mode the protocol upgrades XT supports are disabled, along with some DoS fixes that would be detectable remotely.
IP priorities can be loaded from files using the -ip-priority-source flag. Currently this feature is only useful if you find IPs that are using up all your connections, no matter what you set -maxconnections to.
The Debian/Ubuntu package is much improved and now configures systemd to automatically start/restart your node.
https://github.com/bitcoinxt/bitcoinxt/releases/tag/v0.11B