What features of yarn are not yet available in npm v5.0?

npm v5.0 brings a lot of features currently present in yarn, including:

• installs --save by default
• package-lock.json will be automatically created (I assume the lock file ensures consistent installs)
• automatic fallback-to-offline mode

From my understanding, what yarn offers in addition is parallel downloads (therefore faster download time). I don't see that mentioned in the npm blog post. Apart from this, are there other benefits to still using yarn?

via Dheeraj V.S.