I love how the top bar stays the same. The fact the Log out button was moved is a very nice touch!! I have almost accidentally logged out a few times.

I like the new little icons next to the buttons on the nav bar! Personally I like it without because it looks neater and cleaner without them but they are a nice touch.

Going from the ride side panel there is a lot I like! I absolutely love the new king info box! If it shows the king that will be really cool! If it shows the player icon it will still be pretty neat as well. I love how the progress bars and # of the lion's level is bolded. It makes it easy for me to read. The overall design on the King's box is really nice.
The event, achievements, and bookmarks are also well done! I am loving the idea of longer Bookmark titles!!
I'm dying to know what the View More for game stats leads to. I wonder if it's the leaderboard or if it is the list of mutie lions.

The overall view of everything else is what is very... meh(?) to me. I kinda like it better when the Name of the lion is centered but that is 100% a personal opinion. When the name is centered it feels more 'This is who it is!!' rather then 'this lion, here.' The centered name stands out a bit more, which is nicer in my opinion.
I love the little images of the items used, but I kinda like how it is now. The color of the images make it pop but they look off in quality next to the flame icon. It feels neater and less cluttered when it is just "Item Name: Description" rather than 'Image: Desc"

The button style is clean and looks fresh, but they also look more 2d now. I personally don't like the shade of color used for them, but that is just me being used to the lighter buttons. It 100% is something I can learn to deal with and it might grow on me later. The fact there is more contrast when you hover over them is a huge plus in my books! Also the Find a Stud and Reverse Breed buttons are a nice touch! I'm not sure if it was intentional but the auto breeding button feels out of place since it is discolored.

I hope personalities keep the little typing as well. Like "Distant (Neutral)" I know its just a preview but I'm just added a few 2 cent comments on some things just incase. I also hope that the ##/### comes back for the experience bar! I like knowing how much more I need to level up, even if its for my ladies. Maybe it could be a hover to view thing? Everything looks clean and organized other than one thing. The total stats looked better when that bit was centered, instead of being aligned left. With it aligned left it blends in with the other 3 stats above it and is harder to look for at first glance. Sometimes I skim the stats of lions and having it centered makes it stand out more.

I dont know how I feel about the markings but I like how they are now and the new one a bit strange. It would take some getting used to. I dont know how the decor list will work but I like how it is visible with the current set up. My biggest issue is that slot 10 doesnt fit on it unless you scroll. Slot 1 through 10 is given to us and it feels odd to have one of the default slots cut off so people would have to scroll to see the one marking. I feel adjusting it to show slot 1-10 without scrolling would be better. Than anything slot 11 and later would need a scroll to view. Some people dont care for anything in those slots anyways.

Breeding info and nursing cubs are neat!! I genuinely think they should be before appearance. Specifically because of the father and mother info.
The Heritage, Cubs bred, and Former prides buttons fit nicely where they are! If Breeding info gets swapped with appearance then they would still fit there as well. They could also have the Import to Wardrobe and Equipped Decorations side by side above them instead on in the gap under appearance. Or maybe if the appearance is swapped with the breeding info the gap wouldnt look so weird because those two buttons would be next to the others like it.

I dont like the fact the Add marking slot and reveal fertility was moved. They fit well next to their respected places before. If someone wants to add 10 slots or reveal the fert they now have to scroll all the way to the bottom instead of about halfway. I think the reveal fert should stay next to the fert level like it is now and maybe the Add marking slot button can move to where it would show slot 11+ (It shows slot 1-10/any slot that was unlocked already like it does now but it will have an extra slot with the button 'Add Marking Slot' so it can be done by viewing the markings instead of at the bottom of the page. ) Everything else from the lion bio settings looks good!

I primarily use mobile because of how busy my day is. I am super excited to hear that Lioden will be more mobile friendly! That being said there is a bit about this I'd like to add to the above stuff. The above stuff is the general how I feel. This is just how I feel about the mobile edits.

The item used box feels very much like a block of text so the images are really the only think setting it apart. My brain sometimes doesnt let me read giant blocks of text, and my dyslexia makes it hard as well. The images are really the only thing making it able for me to process it correctly, which is the complete opposites of how it feels when its on the PC version.

The lion image is smaller then it is currently. It fits very well but on smaller phone screens it can make the lion a little hard to view without zooming. How it is currently the edge of the lion's image almost kisses the edge of the screen. On the new preview it is double that gap between the edge and the image. I have to view to truly see the lion and their beauty.

Everything feels more comfortable and cleaner on mobile then it does pc. Which is a huge improvement from how it is currently! But that makes the PC version look bad compared to it now. The balance isn't met in my opinion and it almost feels like it was made to be a mobile game.

(EDIT)Maybe add crossroads, den, and hoard to the bar with the sb/gb? The collapse bar is something I have not liked about mobile lioden, new or old. Having the words centered makes the collapse box look... strange. It looks bigger and odd. If there is a way, maybe the box could be reduced and they could be arranged in a smaller big like:
DEN CHATTER
CROSSROADS NEWS
HOARD EVENT
OASIS HELP
So instead of a long list it is 2 columns of links to reduce the long orange box us mobile members have to resort to?

I am super excited for a dark mode. I don't know how I feel about the Day/Default having a color change but it does make it a little more easy for the eyes. I have gotten used to and comfortable with the Day colors we have now. The night and dark modes will totally be what I play on. I use account colors to let me know which account I am on instead of wondering. (if that makes sense.) There is a lot of good changes that I love but there is a lot more that I am not a fan of. I don't like the fact that the buttons are the same color as the progress bars now. I like the fact they have their own unique colors right now. It sets it apart and makes it feel more fleshed out and not as 'copy and paste' (I know that sounds bad. I couldn't find another way to word it that didnt sound as harsh and negative. ) I can look over that of course because I know the new code is more modern and meant to be easier and probable less cluttered as well.
(EDIT)the red progress bar for cub survival makes it feel like they are close to death. Maybe instead of red it could be blue? Im not sure if the bar could change depending on % status, like 75-100% is green, 50-74% yellow, 0-49 red, but I feel that would be neat if possible.