Mysql 5.6 new features

• Memcache plugin - This is released as a technology preview.
  http://blogs.innodb.com/wp/2011/04/nosql-to-innodb-with-memcached/
• Subquery optimizations are now included. This was originally planned in the now abandoned Mysql 6.0.
  http://dev.mysql.com/doc/refman/5.6/en/subquery-optimization.html
  
• InnoDB now has persistent statistics and can help in better analysis. http://blogs.innodb.com/wp/2011/04/innodb-persistent-statistics-at-last/
  
• InnoDB tablespaces are transportable. Some of the limitations and issues with previous releases are now gone.
  http://blogs.innodb.com/wp/2012/04/innodb-transportable-tablespaces/ 
  
• InnoDB now has Fulltext index support.
  http://blogs.innodb.com/wp/2011/12/innodb-full-text-search-in-mysql-5-6-4/
  
• Row based replication now includes the original query.
  http://d2-systems.blogspot.com/2011/04/mysql-562-dm-binlog-informational.html
  
• Time delayed replication - This was doable using Percona(Maatkit) tools but is now in built.
  http://dev.mysql.com/tech-resources/articles/whats-new-in-mysql-5.6.html#replication