Fewer mirror matchups and more team character diversity is the goal of the quick match changes announced as live today, and just as detailed in a blog post last week:

From now on, it will be very unlikely that you will encounter more than one of the following heroes on the same Quick Match team: 

• Abathur
• Cho’gall
• Lt. Morales
• Murky
• Nova
• The Lost Vikings

As with all of the team composition restrictions we’ve implemented so far, parties can still bend this rule. This means that you may still see heroes like Abathur and Cho’gall on the same team if those players entered the queue as a party.

There are two other exceptions that are worth noting, as well: 

• If you are matched against a team that has two of the above heroes in their composition, such as Abathur and Murky, your team may also receive two of the listed heroes.
• Auto-Select does not yet abide by the new restriction. This means that if you have one of the above heroes and an Auto-Select on your team, the Auto-Select may also become one of the listed heroes. Auto-Select support for today’s new Quick Match restriction will arrive with a future patch.

[Via BluesNews]