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Yes, there is no need to deal with AngularJS 1.x. Angular 2 is rewritten from the ground and it's not just an upgrade but a totally different framework. Many features have been deprecated and even more were introduced. For sure an experienced AngularJS 1.x developer might make the switch quite easily but you don't have to worry about this. There is a learning curve but this is sth normal since you want to master such a super-useful tool.

For me the key points you have to feel somewhat confident before digging into Angular 2 are:

• apps architecture based on components, communication between parent to child components etc. In Angular 2 everything is a component. Even the whole app is a component.
• ES6 usage - you can use ES5 but you are going to struggle some more with no good reason. Start playing with classes, constructors, arrow functions and so on before building your first Angular 2 component so that you can stay focused on the framework's ways and not the js syntax itself. TypeScript is cool and is used a lot by many developers but i consider it an option if a developer needs sth more after mastering ES6 classes etc.

Keep in mind, Angular 2 is in RC so it is a step behind stable release but not there yet. Surely you can start playing with it since there are tons of educational material out there and a solid community to support your efforts.