Apparently Canon is going full Sony attack. If the rumor is correct Canon will have a total of 16 lenses announced in 2021. CanonRumors writes:

These lenses are likely next in the pipeline:

• Canon RF 70-200mm f/4L IS USM
  External zoom, extremely small size. I’m told it’s about the size of a coke can.
• Canon RF 50mm f/1.8 STM
  This lens will be better optically and in build quality than the EF version.

These lenses are likely being announced in 2021:

The TS-R lenses are “groundbreaking” autofocus tilt-shift lenses for the RF mount.

• Canon TS-R 14mm f/4L
• Canon TS-R 24mm f/3.5L
• Canon RF 10-24mm f/4L USM
• Canon RF 14-35mm f/4L IS USM
• Canon RF 24mm f/1.8 IS STM Macro
• Canon RF 35mm f/1.2L USM
• Canon RF 100mm f/2.8L Macro IS USM
• Canon RF 135mm f/1.4L USM
• Canon RF 100-400mm f/5.6-7.1 IS USM
• Canon RF 400mm f/2.8L IS USM
• Canon RF 500mm f/4L IS USM
• Canon RF 600mm f/4L IS USM
• Canon RF 800mm f/5.6L IS USM
• Canon RF 1200mm f/8L IS USM.

Here are the first images of the new Fuji X-S10 that will be announced on October 15:

via Nokishita

Nokishita confirmed all the Fujirumors rumors and added a few details:

The main specifications of Fujifilm “X-S10” are 26.1 megapixel X-Trans CMOS 4 sensor, 5-axis in-body image stabilization that has an effect of up to 6.0 steps, X-Processor 4, 4K30p video, full HD 240p slow motion. It seems that it will be motion video, continuous shooting performance of 30 frames / second, 1.04 million dot vari-angle liquid crystal, 18 kinds of film simulation

Fujirumors also said:

The X-S10 has 3 Top Dials, No D-Pad, No Top LCD, Dedicated ISO, Video and Q Button

There will be also a new lens. FR writes:

Fujinon XF10-24mm F4 MK II is Weather Sealed and Announcement in October

CanonWatch reports the possible three lenses that will be released in 2021:

• RF 70-135mm f/2L 
• RF 250mm f/2L
• RF 500mm f/2.8L

And in an interview released at DC.watch (English text at CanonWatch) Canon didn’t deny the possibility to make a R7 APS-C camera. I would never buy an EOS-M camera now!

Fujirumors shared the details about the new X-S10 camera that will be announced on October 15:

• Fujifilm X-S10 to cost around $999
• Fujifilm X-S10 with 26 Megapixel X-Trans Sensor
• Fujifilm X-S10 Coming with X-T4 alike Selfie Screen
• Fujifilm X-S10 Coming with NP-W126S Battery
• Full Auto mode with RAW files
• Fujifilm X-S10 Will be SLR Styled (not Rangefinder)
• Fujifilm X-S10 Coming October 15
• Fujifilm X-S10: Fuji’s First APS-C Mid-Range MILC camera With IBIS

Here are the rumored Canon E-M50II specs:

• 32.5mp APS-C CMOS sensor
• DIGIC X (maybe a new version)
• DPAF II
• 14fps
• 4K @ 60p no crop
• No IBIS
• Similar EVF resolution as the EOS R6
• Single SD card slot

via CR

Sony registered a new camera in China with the code “WW638397“. It is equipped with Wi-Fi (5GHz / 2.4GHz). The last camera that was registered in China was the Sony A7c. Usually non-high end cameras are first registered in China so this might be an RX model. The fact that it has Wi-Fi (5GHz / 2.4GHz) usually has pointed out to high end cameras in the past but I think by now all cameras will have that WiFI standard anyway.

In summary, my first guess is that this is an RX camera and only as a second option I think this might be the A7IV or A9III.