While technically a safe exit doesn’t imply a safe entry and also some might argue that I2P is better, this is good news, helping redefine the public image of Tor—it’s not shady, darknet (hidden services) and privacy tools are not for criminals, but important for everyone. That is so obvious for privacy advocates, but many people see things from the wrong perspective, saying, “I have nothing to hide.”
For those who are still on Win 7: Firefox (and so Tor Browser) will stop supporting Win 7 soon. Seriously, you better plan to migrate to Linux. Not-so-good privacy issues aside, everyone knows Windows is not very secure/safe/convenient anyway.