WordPress 4.0 ?
Oh, no. Too soon to expect WordPress Version 4.0 as we are currently have 3.4.2 as the stable version and 3.5 beta 3 is in the shop.
For security purpose, we should never run beta version for production.
Trying the Latest WordPress
If you want to try the latest version of WordPress, you may do so on your sand box or dev server to test out your plugins. To get the latest version of beta, you may install "WordPress Beta Tester" at http://wordpress.org/extend/plugins/wordpress-beta-tester/.
This plugin "Allows you to easily upgrade to Beta releases. Once installed it will enable you to upgrade your blog to the latest Beta or Release candidate at the click of a button using the built in upgrader. " After you install and activate this plugin, go to Tools, then Beta Testing, then check the second option
* Bleeding edge nightlies This is the bleeding edge development code which may be unstable at times. Only use this if you really know what you are doing.
You'll see a fair warning:
Please note: Once you have switched your blog to one of these beta versions of software it will not always be possible to downgrade as the database structure maybe updated during the development of a major release.
Then you can head for the Dashboard, Updates ( yourdomain/installationfolder/wp-admin/update-core.php ), you can click "Update Now". Then after you go to the Dashboard Home, you will see:
You are using WordPress 3.5-beta3-22584. (as of today 11/15/2012 ).
You may also directly download the latest WordPress beta version 3.5 (as of this writing) at http://wordpress.org/wordpress-3.5-beta3.zip after the release note at http://wordpress.org/news/2012/11/wordpress-3-5-beta-3/
Meanwhile, you may want to keep your eyes on the known issues and bug fixes by checking http://wordpress.org/news/2012/11/wordpress-3-5-beta-3/ .
We will sure to publish new video tutorials on WordPress 4.0 when it comes out, but we saw a guy try to get grab our attention using a "WordPress 4.0" title for his video and end up getting a few "dislike". In the video, it even uses the typo "WopdPress 4.0" to "fool" audience. It looks like a "April Fool" joke.
Looking ahead is good but we shall never rush. We are glad that WordPress development does not rush its users from 3.0 to 4.0, then WordPress 5.0.... like Drupal 5, Drupal 6, Drupal 7 (and their upgrade from Drupal 6 to 7 is pretty complicated to many regular users: ...Disable all custom and contributed modules... Remove all old files and directories ... oh, Gosh!) Upgrading to a new version of WordPress is a breeze if we have well design themes and plugins, much easier than other CMS, thanks to the great WordPress architecture design.
Learning WordPress 4.0
For someone who is new to WordPress, they may want to start with the latest version. Actually if you learn WordPress 3.x well, you will find it easy to master WordPress 4.0. This is our belief. The new WordPress UI is only getting better and better and more intuitive. This is what we have been experiencing since WordPress 2.0. Just like HTML 5.0, with HTML 4 basics, things will become easier for 5.0.