An update to Joomla has been released.
Joomla! 3.4.1 Released (joomla.org)
The Joomla! Project and the Production Leadership Team are proud to announce the release of Joomla! 3.4.1. This is a maintenance release for the 3.x series of Joomla! and addresses issues introduced in 3.4.0 with installing certain extensions and content languages access.
What's in 3.4.1?
The 3.4 release introduces new features into the CMS such as improved front end module editing, decoupling of weblinks, composer integration, Google new reCaptcha and security improvements by implementing UploadShield code which can detect most malicious uploads by examining their filenames and file contents.
This is a maintenance release but there are some security improvements. We do suggest all our clients perform this upgrade.
Our Website Maintenance Department will be in contact with you regarding these upgrades.