Yes that’s the package. It’s the same package name as previous for compatibility with previous upgrades. So yes you are installing newrelic-php5 and as you can see it’s version 220.127.116.11
Generally the PHP beta is manually installed, meaning
beta-folder/newrelic-install install was the easy install method.
a call anywhere else to newrelic-install will result in the installer starting. Choose 1) to install the agent to re-run the installer script.
This should remap the newrelic.so file to the PHP 7 ready .so file. Make sure you restart PHP to make it take effect and check your PHPinfo, it should move the New Relic section which shows the version at the top move from beta5 to 18.104.22.168.