It’s the unofficial version, as evad3rs hasn’t released, and very unlikely to release it until iOS 7.1 is released to the public.
As we reported earlier, Apple hasn’t fixed the exploits used in the evasi0n7 jailbreak in iOS 7 beta 3. So it is possible to jailbreak iOS 7.1 beta 3 by making some changes to evasi0n package.
You can download the unofficial version of evasi0n from this link. If you need any help jailbreaking, you can check out this step-by-step guides for iPhone, iPad and iPod touch, the process would be exactly the same.
Please do proceed with caution as this hasn’t been released by evad3rs. Please also don’t forget to take a backup of your device before proceeding.
We haven’t been able to test it out, but a number of redditors have confirmed that it works. @EveryApplesPro who has released the unofficial version of evasi0n has published the screenshot above and also made a video to confirm that it works.
Let us know how it goes.