Yes, it is true that Microsoft has released a version of its Defender antivirus software for Android devices. The app is now available for download on the Google Play Store, and it provides antivirus and malware protection for Android devices. Microsoft Defender for Android also includes features such as safe browsing, which warns users if they are about to visit a malicious website, and anti-phishing protection, which helps protect users from scams and phishing attacks.
It is worth noting that Microsoft has offered antivirus and malware protection for Windows devices for many years through its Windows Defender software. The extension of Defender to Android is part of Microsoft's efforts to expand its security offerings across different platforms and devices.