Our early access page lets you pre-order devices that aren't yet publicly available. As soon as they're ready, these devices will ship to you so you can start evaluating and integrating sooner, which in turn helps us refine the product before bringing it to the broader public.
When using these products, don't hold back. Use them however you need to and don't be afraid to be rough. Try to find issues. Since at this stage we can nimbly and quickly fix nearly anything you might find, allowing the final product to be even better.