Will the new 2.1 content be instance-based?

Blizzard's recent announcement of additional content for the upcoming 2.1 patch left a lot to be desired where details were concerned. While it's quite clear that there will be three new areas in the game -- the Ethereum Prison, Skettis, and Ogri'la -- Blizzard's phrasing never specifically states that these will be 5-player instances, or instances at all. Instead of "instance," Blizzard talks about "solo and small-group" content, "tons of new quests," and (for Skettis and Ogri'la) "5-person bosses." So what should we expect to see in patch 2.1? Only Blizzard knows, but that doesn't stop us from speculating! Over on The Many Realms of Relmstein, Relmstein presents us with three possibilities on what these zones might be like:

• Quest Hubs with new chain quests which eventually result in having to fight a 5-man boss.

• Quest Hubs which require you to go to a non instanced area filled with elite mobs.

• Each area has a single small instance which has group content inside but single person quest objectives outside.

I think that sums up the possibilities quite well -- but we're just going to have to wait to find out which one it will be.