For a while it has been warned that WordPress 3.6 would be arriving and it is now here.
From first glance it looks as though this release is aimed mainly at MEDIA enhancements. With ‘built-in HTML5 media player for native audio and video embeds with no reliance on external services’ being the major change.
We shall not be rushing out to change to 3.6 but will instead wait for most of the Plugins to catch up.
There is nothing worse that upgrading only to find various parts of your site being broken because of plugins that are not compatible.
This has happened more in the past and does not catch us out as much anymore, though we still provide an attitude of caution before doing the updates.
The choice is yours