Here is the detailed specs list:

LUMIX S1 II

LUMIX S1IIE

Courtesy of Asobinet

Here are more specs leaked on chinese social networks:

DC-S1M2ES:
14+ stops of dynamic range V-LOG
24M sensor
Full frame 6K30p OG, 6K60p 2.4:1, 4K30p 16:9/17:9, 4K60p 2.4:1
APS-C 3.3K 50p 4:3, 4K60p 16:9/17:9
S&Q 4K 2.4:1 60fps, FHD 180fps
120Hz 5.76 million dot EVF
779-point phase focus
Dual native ISO100/640
Five-axis image stabilization with 8 stops in the center and 7 stops in the periphery
1/8000s Mechanical shutter
30fps electronic shutter continuous shooting, 10fps mechanical shutter

DC-S1M2:
15-stop dynamic range V-LOG (dynamic range enhancement mode on)
14+ stops dynamic range V-LOG (dynamic range enhancement mode off)
24M new sensor
Full frame 6K30p OG, 5.9K60p 17:9, 5.1K60p 3:2, 4.8K60p 4:3, 4K120p 16:9/17:9, FHD240p
APS-C 3.3K 120p 4:3, 4K120p 16:9/17:9, FHD240p
S&Q 6K 60fps, 4K 17:9 75fps, 4K 2.4:1 120fps, FHD 240fpsFF
120Hz 5.76 million dot EVF
779-point phase focus
Dual native ISO100/800
Five-axis image stabilization with 8 stops in the center and 7 stops in the periphery
1/8000s mechanical shutter
70fps continuous shooting with electronic shutter, 10fps mechanical shutter

Source Weibo

Topaz launched the new Photo AI 4 (Click here to see all new features).

Press text:

We’re excited to announce that Photo AI 4 is officially here, bringing our most powerful photo restoration and enhancement tools yet. This update introduces groundbreaking features like Dust & Scratch removal, a revolutionary solution for restoring old photos and fixing lens damage.

To celebrate, we’re offering a limited-time discount from May 12–28:

• Save $30 on New Photo AI Purchases
  Regular Price: $199 → $169
• Save $18 on Photo AI 4 Upgrades
  Regular Price: $119 → $101

Why promote Photo AI 4?

1. New Dust & Scratch Removal
   The first tool of its kind to automatically remove dust and light scratches from images.
   Perfect for:
   Restoring damaged prints and film scans
   Removing lens dust and small surface flaws
   Cleaning up archival or scanned work
2. Super Focus v2
   Refocus blurry images with our upgraded deblurring model, ideal for:
   Blurry RAW files and smartphone shots
   Vintage and archival photos
3. Active Autopilot + New Interface
   Photo AI’s intelligent autopilot now suggests smart edits and shows next steps. Plus, the right panel has been redesigned for a smoother, more intuitive workflow.

What your audience can do with Photo AI 4:

• Recover family heirlooms, film scans, or dusty prints (Dust & Scratch)
• Clean up photos with visible lens debris (Dust & Scratch)
• Refocus out of focus shots with one click (Super Focus v2)

I just got this additional info with UK pricing:

Lumix S1II

• 15 stops dynamic range (DR Boost On)
• 24.1/26.8 MP
• 32 bit float with XLR adapter
• ARRI Logic with DWF-SFU3A software key
• New Urban sports AF mode
• Slot 1 CF Express Type B
• Slot 2 SD
• Price: £2899+vat

Lumix S1IIE

• 24.2MP sensor of the S5II
• Cinemascope 4k60p aspect ration (I think S1II has this too)
• New Urban sports AF mode
• 8 stops in body stabilization (I think S1II has this too)
• 14 stops dynamic range in V-LOG (I think S1II has this too)
• ARRI Logic with DWF-SFU3A software key
• £2399+vat

Lumix 24-60mm f/2.8

• 14 elements in 12 groups and 9 blades
• 24-60 looks identical to 20-60
• 544g
• min focus is 19cm
• 99cm in size length
• £899 but a £300 off voucher code offer if bought with the S1 models.

The following Lumix S1IIe information was briefly published on a Panasonic website (and then removed again):

Here is the text about the S1IIe specs:

Get the most out of your LUMIX S1rii with these settings!

Today deals at Amazon, BHphoto, Adorama, Amazon DE, Amazon UK, Amazon FR, Amazon IT, FotoErhardt DE, FotoKoch DE.
Panasonic Lumix S1R II Review at Photographyblog.
The ONE lens you need: Sigma 16-300mm vs Tamron 18-300mm SUPERZOOM lens review! (Northrup).
Sony ZV-E1 vs. LUMIX S9: The Choice is Easy!? (Geeky Nerdy Tech).
Honest thoughts about the LUMIX S9 (Long-Term Review) by Matthew Dangyou

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Digitalcameraworld shared their speculation about the Panasonic/Leica cameras that are in the works and could be released in 2025:

Panasonic Lumix S1HII

• Successor Rumors: There have been persistent whispers about a successor to the Panasonic Lumix S1H, the company’s full-frame video specialist, but these are likely more speculation than anything substantial. Rumors about 50MP sensors and built-in ND filters feel like wishful thinking.
• Official Response: Panasonic’s business development and product planning executive, Matt Frazer, mentioned that “I’m sure at some point there’ll be a replacement for the S1H. We have to kind of do things in a sequence; the S1 series was the next most logical cameras to be replaced, and so starting with the S1R made the most sense because the sensor was ready for it.”

Panasonic Lumix S1II

• Panasonic Lumix S1 Discontinued: The flagship Panasonic Lumix S1 has been discontinued and is now five years old, meaning a successor is almost certainly on the way.
• Two Successors: Some wild specs suggest that Panasonic might release two successors, following the template set by the hugely successful S5 II and S5 IIX.
• New Features: Rumored specs include a 34MP stacked CMOS sensor in a smaller, weather-sealed, magnesium body with an active cooling system and built-in ND filters. The camera is expected to offer both 6K and 4K uncropped video at 120fps.

Panasonic Lumix S5R

• New Camera: Recently, there has been mention of an entirely new camera: the Panasonic S5R. This could represent a shift from the manufacturer’s previous product segmentation, which included the flagship Panasonic S1 (recently discontinued), the resolution-focused Panasonic S1R, the video-focused Panasonic S1H, and the enthusiast-level Panasonic S5.
• Phase-Detect Autofocus: With the launch of the S5 II, which became the first Panasonic camera with phase-detect autofocus, the product lineup has been redefined, making the S5 series the likely focal point moving forward.
• S5 IIX Video Features: The S5 IIX is designed for video and has raised questions about the necessity of the upcoming S1H II.
• Market Demand: The chatter around a resolution-oriented S5R suggests that the market is demanding the S5 series as its main camera, which may push Panasonic in a new direction.

Panasonic Lumix S1X

• New Camera: If you think the S5R rumor seems like a stretch, then you’re going to love the reports of a Panasonic S1X. It feels super sketchy to us; at least there is some merit to the thought process of Panasonic expanding the newly successful S5 product line, but introducing another new model seems improbable.
• Whispered Specs: Rumored specs for the S1X include a 49MP BSI sensor, 8.5K 48p video, 60fps bursts, 17 stops of dynamic range, and omnidirectional phase-detect autofocus. Sounds like a lot, right?
• More Salt: While these specs sound exciting, they seem like more wishful thinking. Nonetheless, the possibility of a new high-end camera from Panasonic can’t be completely ruled out.