According to Wikipedia, “Integrating Google Translate into the content translation tool on Wikipedia has been long-requested by volunteer editor communities. Editors can select from several machine translation systems to support an initial article translation, Google Translate now being one of these options.”
The organization also states that by using Google Translate, an additional 15 languages will be supported bringing the total number of languages to 121. This includes Hausa, Kurdish (Kurmanji), Yoruba, and Zulu. “We’re excited to collaborate with Google on this new added functionality of the content translation tool. Translations will be published under a free license that allows content to be integrated back into Wikipedia in line with our own licensing policies.”
They also note that no personal data will be shared with either Wikipedia or Google when the Google Translate tool is used, so for those who value their privacy, you don’t have anything to worry about.