This is just a rough guess but 90210 has got about another 12 episodes and 欢乐合唱团 hasent hit that many so it will probs be after one of them has finnished unless they 显示 something else first. 或者 they could wait to 显示 season 6 again first like atm all eps are being replayed in the morning (theryreon season 4 atm) however they might just 显示 season 5 in the morn, wait and bit then but six on earlier in evenings.
That's all just a rough guess really. Hope I helped though. That's just my thoughts. I kinda rambled. Have 你 tried watching it on the net?