1.19.1.4 (Winows) 1.19.1.4 (Mac OS X) 1.19.1.4 (Linux Beta Client) Beta Grid 1.18.6.77968 (Windows) 1.18.6.77968 (Mac OS X) 1.18.6.77968 (Linux Alpha Client) Release Candidate 1.20.8.88152 (Windows) 1.20.8.88152 (Mac OS X) 1.20.8.88152 (Linux Alpha Client)