Premades are currently able to que battle grounds as normal.
A group of 15 players can que into Arathi Basin and Eye of the Storm.
A group of 10 players can que into Warsong Gulch.
Here is the last blue post upon the subject:
These types of threads and posts, lack of self testing and research, is all together too common in regards to TBCC PvP subject matter. There’s much misinformation commonly dispersed with no regard.
This is telling of the types of players these are. Lack of self reflection, study, and discipline. No will to learn and become more skilled. Lacking awareness of what’s happening around them, poor character positioning, unwillingness to change and adapt to the enemy player’s moves and cooldowns used.
All together, increasingly frequent as time marches on. The gap of player ability and experience along with mindset is the furthest it has ever been.