In case you’re unfamiliar with Safari’s Reading List, basically it gives users a space in which they can save articles for reading later. Of course there are several apps such as Pocket that already allows similar functionality, but if you’re all about native integration then we guess there’s that.
Chrome’s feature works similarly to Safari’s Reading List and it can even save articles offline so that if you’re in a place without internet connection, not to worry as you’ll still be able to read your saved articles. Chrome’s version seems to organize it better as well and will separate your articles by Read and Unread, so if you’re the forgetful type you won’t have to comb through articles again to see if you’ve read them.
The update should already be live so go ahead and update your Chrome to Chrome 57 and you should be able to access the new feature.