Difference between old and new R5 for wildlife and using an adapter

[Far-Out-Dude]

My questions are these, how much more and why would the R5 Mark ii work better for wildlife photography than the original version?

Second question, I can manage to get the R5 Mark ii but would not be able to afford an RF lens for now,  I am looking to get the Canon 2972C002 lens adapter so I can use the EF lenses I have (Mainly the Canon EF 100-400mm f/4.5-5.6L IS II USM Lens will be used for wildlife and moons shots) Are there any problems I need to know of when using this adapter? I already use one to use my EF lenses on my Canon M50 that is an EF-M mount but everything is different so I thought I should ask.

Looking forward to the difference in image quality,

[Tronhard]

Well... although the R5II has been announced, as far as I understand it, the firmware is not fully confirmed yet - apparently it's v0.05 which is not a full release, and there is a very limited constituency of people who have access to the hardware.
Consequently, I would hold your enthusiasm and questions until full production versions are available.
Given that the EF100-400 L MkII lenses have worked flawlessly with the R5, I see no reason why they would not work equally with the new version.   It would not be in Canon's interests, or that of their market to let that compatibility lapse.

[March411]

The R5 MkII manual was recently published and can probably offer some some value as you weigh your decision on the two versions of the R5 body.

Removed link - not public information

[March411]

Stephan, I'm unclear why the link was removed as it a public website that I linked to for the manual?

Clarity would be appreciated.

[Stephen]

It hasn't been made public yet. It's only available if you have the direct link. We didn't even know about it until you posted it. 

[March411]

The HTML version is also live, can I post a link to that manual. Being able to access them kind of makes them public. If I could find them anyone can with a google search.

[Stephen]

No, you cannot link to any form of the manual until they are live on the Canon USA site.

While they may be searchable by Google, they are not listed on the Canon USA site or the cam.start.canon site. You have to have a direct link, which makes them unofficial. 

[Tronhard]

Interestingly enough, my search did take me to the cam.start.canon site, but the link worked very briefly and then died.  Thereafter non activity.  So, I guess we are in waiting mode.
All the GAS sufferers will be beside themselves (no company included).

[Far-Out-Dude]

Thank you both for the reply, guess I will just have to wait longer. The R1 looks interesting feature-wise, just completely uncomfortable to hold with that bottom part the way it is.

[March411]

Sorry the link to the manual got removed, I hope you had the chance to grab it.

I'm a bit confused why it was deleted.