Joomla 3.4 was released last month and just as with every major Joomla release there were beta and release candidates made available for testing over the preceding weeks. Those special releases are made specifically for Joomla developers to use to both test the changes in the upcoming release AND to check that their own code is still working as intended.
For a long time Joomla has included a very powerful component to handle url redirects. This is especially useful after a site upgrade or redesign. Don't know how to use it? Check this great article explaining all the features by Ruth Cheesley in the Joomla Community magazine.
However it had a problem which probably meant that you looked at it, set it up and then quickly abandoned it for something else.