Clan Wars most likely be enabled on Thursday, October 11, in time for Prime Time at 8:15 AM PDT (3:15 PM UTC). We apolgize for having it down for so long, and these are the issues that came up with the 8.0 update:
Again, we apologize for the downtime.
If you have replays enabled and are disconnected during battle - you won't be able to reconnect until the battle is over. Therefore, we recommend you disable your replays while playing in Clan Wars if you suffer from connection issues.