BioWare Blog - Game Update: Dragon Age in Production

According to the job position, BioWare is looking for a developer to design and implement their in-game economies that range from gear, crafting, and overall content. You know, the main drivers for any RPG.

"We are looking for an Economy Designer to join our growing Game Systems team working on the next Dragon Age game. Reporting to the Lead Economy Designer and Game Systems Director, you will help shape the progression and economy in a modern RPG, with a focus on player autonomy and expression," reads the listing.

Design flexible economy systems and features aligned with the game's creative direction. (example: progression & reward structures, loot, merchants, crafting, etc.)
Create game economy models and evaluate their performance & impact on the player experience through the lens of a modern RPG.

There's absolutely no mention of multiplayer, online, or live services in the job listing. That's a pretty good sign that Dragon Age 4 still is a singleplayer game.