Skirmishes are being added back into the game. You will be able to solo queue into skirmishes and fight with random people, if you are a healer is should not pair you up with another healer and etc(like lfg). But the main thing that they have changed about Skirmishes is that it will give you an incentive, if you win you might get some honor or maybe a piece of gear.
But the great thing about this is:
1. It gives people an alternative to battlegrounds.
2. It can help people prepare and learn how to arena. Battlegrounds already have this but this can open up people to arena.
Are you happy about what they are doing with skirmishes? What would you like for them to do different?
Update: There will be not 5s skirmishes no definite answer on multiple queuing right now.