We can't take credit for the headline, a Steam Community Group Announcement is where it is revealed that "the graphical fidelity has risen" for Risen 3: Titan Lords, Piranha Bytes' RPG sequel (thanks Rock, Paper, Shotgun). The game's visual improvements are confined to the 64-bit version of the game, but they note that those restricted to the 32-bit client can upgrade for free if they get a new operating system. Here's word:

Risen 3: Titan Lords: The graphical fidelity has Risen

...now that we have your attention with our terrible pun, today we'd like to announce that, courtesy of a free automatic update for those who already have the game in their library, we're bringing a slew of visual enhancements to Risen 3: Titan Lords for players running the game on a 64-bit Operating System -

- Improved texture resolution for items, objects, foliage, terrain, particle effects, characters, monsters and other in-game models.
- Improved draw distance & viewing ranges
- Larger caches leading to smoother frame-rates & less LOD streaming
- The introduction of new state of the art post-process effects such as bokeh depth of field and HDR bloom
- Addition of a new physically based, more visually realistic cloud rendering technique that adds even more spectacular skies and sunsets to the dynamic day-night cycles.

For those of you yet to own Risen 3: Titan Lords, fear not: if you're running on a 64-bit OS then you'll automatically receive the 64-bit version of the game upon purchase. Due to the fact that the above improvements are only possible through the extra bandwidth switching to 64-bit affords us, those of you running on a 32-bit OS & purchasing the game will receive the original 32-bit version, which will of course update automatically should you ever move to a 64-bit OS at a future point.

In addition any DLCs that you have previously purchased (or may purchase in future) will obviously also function in the 64-bit version and all save games & previously obtained Steam achievements will also transfer from the 32-bit version to 64-bit version.