Three additions to the currently known specs:

600mbps bitrate
16bit RAW output
Sony claims 15 stops dynamic range
iso is still the same as previous a7s2 –  409600
Base ISO for slog 3 is 160 instead of 1600 (As7II) on the pre-production unit.

I keep receiving bits of info from different sources. Not all info may be 100% accurate because most of the sources saw prototypes and maybe they missed some parts or Sony might not have enabled the full features.
Also: I have been told Sony uses a new passive cooling system. But I sill got no confirmation if this means there is no active vent at all (it may be that it has a vent for extreme conditions only?).

Rumored A7sIII specs recap

• New 12MP sensor with fast readout
• records FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI
• 600mbps bitrate
• Base ISO 160 for S-LOG3
• Max ISO 409600 (video)
• 16bit RAW output
• Sony claims 15 stops dynamic range
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• new kind of passive (noise free) cooling system
  
• no overheating, no recording time limits
• UHSII card support
• Looks pretty similar to a Sony A7rIV.
• fully articulating screen like the one used by the Sony ZV-1.
• announcement late July
• shipment start mid August

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To sources: Send me your rumors at sonyalpharumors@gmail.com or use the anonymous contact form.

I am still not 100% sure yet but I am getting some early info about a Sony A7sII successor launch event around July 28/29. The camera is rumored to start shipping out in mid August.

Rumored A7sIII specs recap

• New 12MP stacked sensor with fast readout
• records FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI
• Looks pretty similar to a Sony A7rIV.
• fully articulating screen like the one used by the Sony ZV-1.
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• new kind of passive (noise free) cooling system
  
• no overheating, no recording time limits
• UHSII card support
• announcement late July
• shipment start mid August

To readers: Follow us on Twitter, Facebook and Discord!
To sources: Send me your rumors at sonyalpharumors@gmail.com or use the anonymous contact form.

Of course not a surprise but we would have hated it if Sony wouldn’t have done it: The Sony A7sIII will have a fully articulating screen like the one used by the Sony ZV-1.

Rumored A7sIII specs recap

• New 12MP stacked sensor with fast readout
• records FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI
• Looks pretty similar to a Sony A7rIV.
• fully articulating screen like the one used by the Sony ZV-1.
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• new kind of passive (noise free) cooling system
  
• no overheating, no recording time limits
• UHSII card support
• announcement late July

To readers: Follow us on Twitter, Facebook and Discord!
To sources: Send me your rumors at sonyalpharumors@gmail.com or use the anonymous contact form.

First of all I can now confirm that obviously the new camera will be named Sony A7sIII. Some speculated it might have a new name or jump a generation from Sony A7II to Sony A7IV. Well it’s not :)

New 12MP sensor:

It is a new 12MP sensor with fast readout. So no fancy global shutter :)

No overheating no recording time limit:

As you see from the official graph on top (thanks Jeff Ratcliffe) the Canon EOS-R5 has two kinds of limits:

1. Unless you shoot 4k30p: In ideal conditions which means room temperature, no hot days, no sunlight, no artificial light it will stop after 15-30min to avoid overheating.
2. Recording time is limited to 29m59secs in all modes anyway

The past hours three Sony A7sII successor testers made it clear the Sony A7sII successor will not have such limitations:

“A7sii successor will not have any recording time limits”

No overheating limitations and no default recording time limit of 29m59secs. So if it comes to professional video use the Sony A7sIII will surely outperform the Canon.

Rumored A7sIII specs recap

• New 12MP stacked sensor with fast readout
• records FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI
• Looks pretty similar to a Sony A7rIV.
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• new kind of passive (noise free) cooling system
  
• no overheating, no recording time limits
• UHSII card support
• announcement late July

To readers: Follow us on Twitter, Facebook and Discord!
To sources: Send me your rumors at sonyalpharumors@gmail.com or use the anonymous contact form.

We got some more info about the A7sII recording capabilities: FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI.

Rumored A7sII successor specs so far:

• records FHD 240fps, 4k120fps 10bit 4:2:2 and 4K120fps raw over HDMI
• Looks pretty similar to a Sony A7rIV.
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• new kind of passive (noise free) cooling system
  
• UHSII card support
• announcement late July

So it looks like this camera might not have 8K recording..which makes sense anyway. This camera isn’t a toy (just trolling!) meant to give you limited 8K capabilities. It’s all about top 4K quality video.

To readers: Follow us on Twitter, Facebook and Discord!
To sources: Send me your rumors at sonyalpharumors@gmail.com or use the anonymous contact form.

As you know Sony said the As7II successor will have “everything new”. As a consequence of this I saw on the web some websites speculating about a completely new design of the camera. I now know of two people that saw and tested shortly the A7sII successor. While they can’t unveil the specs for obvious reasons they said that the camera design will not change dramatically and it looks pretty similar to a Sony A7rIV.

Rumored A7sII successor specs so far:

• Looks pretty similar to a Sony A7rIV.
• world’s highest resolution new 9.44 million dot EVF (QXGA resolution)
• passive (noise free) cooling system
• UHSII card support
• announcement late July

What Sony said about the As7II successor:

• announcement this summer
• will “exceed everyone’s expectations“.
• The ‘S’ originally stood for ‘sensitivity’ but now it should stand for ‘supreme’ in terms of image quality, and expression
• at least 4K/60p, 10-bit 4:2:2 but it will be more
• Raw video

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If someone reading this post has any A7sIII specs info drop me a message using this anonymous contact box (use an nickname to be recognizable in the future) or drop me an email at sonyalpharumors@gmail.com. Thanks!

Today at 15:00 London time Sony will announce the new 12-24mm f/2.8 GM lens. There will be no other lens or camera announced. And there will be no livestream. But plenty of youtubers and reviewers will post their take on that massive new lens that I have been told will be priced around $3,000!