The very first list of features also mentions Windows Defender Firewall, instead of just “Windows Firewall”.
This also points out the name of Windows Firewall has indeed been changed.
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Firstly, one sharp-eyed Redditor reported that he noticed the change in the latest Windows 10 Preview build.As we mentioned above, another name is probably the only change we’ll see.So, the only thing users will have to get used to is the name itself, because we’ve been calling this feature Windows Firewall for years.Microsoft officially ended its support for most Windows XP computers back in 2014, but today it's delivering one more public patch for the 16-year-old OS.As described in a post on its Windows Security blog, it's taking this "highly unusual" step after customers worldwide including England's National Health Service suffered a hit from "Wanna Crypt" ransomware.
However, as @Malware Tech Blog notes, anyone could modify the attack to remove the killswitch and begin attacking computers again.