There's a preview of Lies of P: Overture on VGC, discussing the upcoming expansion that's a prequel to the puppet-infested soulslike. Somewhere along the way this was unsurprisingly confirmed for PC, and its Steam Listing is online. VGC includes a video with an extended look at 4K gameplay. There's more on the plan on TechRadar, which says in addition to new content in the add-on, a content update is coming to the base game adding two new difficulty levels for all players:

That's because Lies of P is also set to receive a free update that will be made available to all players - irrespective of whether you're buying the Overture expansion or not.

The update is bringing two new difficulty modes to the game. These are Butterfly's Guidance and Awakened Puppet, both of which provide a more story-focused, easier difficulty for those not used to the intensity of soulslikes. The default difficulty that's in the game right now is being renamed 'Legendary Stalker.'

There's no word yet on exactly what effects these difficulty modes will have on Lies of P. But it's easy to imagine reduced damage scaling for enemies and perhaps a decrease in enemy density depending on which difficulty you select.