I'm not a fan of the start menu being in the centre. The applications being in the centre isn't really an issue for me. Luckily, someone who was using Windows 11 on Twitter did confirm that you can move the icons to the left like in previous versions of Windows. They were also using the dark theme which I did think looked a lot better than the light theme used in that screenshot.
One thing I am hoping for, is that it's going to be a free upgrade to Windows 10, like 7/8 to 10 was. I don't really want to buy Windows again, especially since the amount of money that Microsoft get from consumers like us is negligible compared to what they get from corporations, and especially their server software. People who bought an OEM desktop/laptop with Windows installed on it aren't going to spend upwards of $100 to get a new version of Windows, they'll just stick to whatever they have installed. Mac updates are free to Mac users, so why not Windows? Except obviously the corporations, otherwise Microsoft won't make much money.
I did think that Windows 10 was supposed to be the last ever "version" of Windows. At least that's what Microsoft said when they announced it. Maybe they just don't want to go the Mac method of being MacOS 10 for 15 years, especially now that Apple has abandoned that with Big Sur (2020) being MacOS 11 and the upcoming Monterey being MacOS 12.