This occurs when there is not a lot of players are logged on around your MMR (regardless of game mode). So this can be common for anyone at this particular moment.
Its common to see this message for anyone in high Masters, Grand Masters, or anyone in Bronze that is under 500 SR at any time.
Hey there, apologies for the queue! We’ve worked through the issue causing disconnections and now we’re letting the hamsters loose so we can churn through the queue fast. It should be clear within the next 15 minutes or so.
I hope you enjoy the winter event! Cheers!
Don’t tell Geoff!! 
Thanks for updating everyone!
I just changed it. I got the new Mercy icon from my starting loot box.
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