It looks like a new build is in the work:

https://steamcommunity.com/app/475150/discussions/0/1776010325116361217/

Yeah, seems so. Applications have now closed though.

Quote from Dev on that forum:
"I cannot tell you guys yet what is included in this beta as it is all below the NDA, but can promise you it is amazing ^^"

I wonder what is that - New Expansion with Act VI, Level Cap increased to 100, Mythical Difficulty and stuff like that? I might be expecting too much, but can never get enough from Titan Quest :)

Well, we'll just have to wait and see. Nice surprise though.

Same here, it's probably not as big as I dream. Since everyone has their own wishlist, here's mine:

- A new expansion.
- A new mastery.
- Max level raised to 100.
- Ability to enchant sets and unique items.
- Revamped loot drop.
- Performance fixes.
- Better animation.
- Better controls (I so much dislike the hit-button-aim-hit-button again).
- Belts and cloaks.
- Background colors matching the item's quality
- Bigger stash and bigger trade window.
- Random dungeons
- A Linux native port