Apple opens OS X betas to non-developers

So with WWDC fast approaching Apple have just released a change in their policy regarding betas.
In the past you had to be a signed up developer to access pre-release copies of OS X.
This has now changed. Apple have just announced that non developers can access beta releases of OS X via its new Beta Seed Program.
It’s free to sign up but you do have to agree to a confidentiality agreement.
This is a great way of accessing pre-release copies of OS X for your internal testing.