Jailbreak 10.3.1 has been released. You can download last version of Jailbreak 10.3.1 and make jailbreak. You can do it now for free. After that you can install last updates of Cydia Tweaks.
Jailbreak iOS 10.3.1 supported devices: iPhone 7, iPhone 7 Plus, iPhone 6S, iPhone 6S Plus, iPhone 6, iPhone 6 Plus and others all iOS 10.3.1 supported devices.
It's fake Jailbreak 10.3.1 utility. Don't believe such messages and home pages like on example. You must understand that if you install such tools on your iPhone or iPad, owners of this fake jailbreak utility can stole your contacts, photos or other information.
You always can check Jailbreak compatibility here: Jailbreak supported devices. If you on this page, you do not find your iOS version, it means that you can't ake Jailbreak. Don't forget them.