Based on MySQL 5.6.13, including all the bug fixes in it, Percona Server 5.6.13-61.0 is the first GA release in the Percona Server 5.6 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.6.13-61.0 milestone at Launchpad.
Percona Server has implemented a number of XtraDB performance improvements for I/O-bound high-concurrency workloads. This feature fixes the upstream bug: #68555 (#1236884).
ALL_O_DIRECT method for innodb_flush_method has been ported from Percona Server 5.5.
Statement Timeout feature has been ported from the Twitter branch.
Percona Server has extended the SELECT INTO ... OUTFILE and SELECT INTO DUMPFILE to add the support for UNIX sockets and named pipes.
Due to an incompatible upstream change that went in unnoticed, the log tracker thread would attempt to replay any file operations it encountered. In most cases this were a no-op, but there were race conditions for certain DDL operations that would have resulted in server crash. Bug fixed #1217002.
apt-get upgrade of Percona Server would fail in post-installation step if server failed to start. Bug fixed #1002500.
Percona Server 5.6 now ships with memcached plugins. Bug fixed #1159621.
Fixed the libssl.so.6 dependency issues in binary tarballs releases. Bug fixed #1172916.
Error in install_layout.cmake could cause that some library files, during the build, end up in different directories on x86_64 environment. Bug fixed #1174300.
A server could have crashed under a heavy I/O-bound workload involving compressed InnoDB tables. Bug fixed #1224432.