News courtesy of CANSPACE Listserv
GLONASS satellites 48, 49, and 50 are expected to launch at 02:38 UTC on July 2. Live launch coverage will be provided by TsENKI, the Center (for Operation) of Ground-based Space Infrastructure, starting at 01:00 UTC. Also, launch updates are available here.
Read more about the launch here.
Here is a video of launch vehicle rollout (includes 1080p HD version).