Installing WP 2.0 RC1 was exactly the same process as installing WP beta 2. There are no new incidents with the installation, nor with any theme or plugin (that I can see from an initial demonstration.)
However, there are a number of issues:
1. The import admin page has a database issue, can not connect because the headers have already been sent. Further, the width of this page looks like a centered 40% width, and something's definitely wrong.
2. The upload option from the options menu has now been removed. Rather than having both methods as I had hoped, we now only have the dreary iPhoto style upload organization in the admin/write section. That's a pretty heavy bummer.
3. There is a css issue in concert with page reloading. This effects several things which I can see immediately. The first is the highlight of activated or deactivated plugins. The page needs to be reloaded manually after the automatic reload executes in order to see the results reliably. This is also true for the Theme Switcher, and any other CSS related element associated with an automatic page reload.
a.) The css has been modified a little further in the admin section. All the links in the dashboard line up nicely, and the font is a little different. Looking better.
b.) Themes now offer preview images. This will make selecting a theme a visual experience, and not a text based memory game. Nice touch!
c.) The backup database plugin is lovely, and works very well.
I still want an option to upload files and images apart from the post.php, and would also appreciate either the ability to browse other folders with the current system, or preferences to set for this system so that I don't have to have them foldered by month and year in the wp-content folder.
also, I'd still like the old logo to come back, this new one is not warming on me in the least.
I am excited for the Tiger Admin theme plugin to be updated for version 2.0, I miss its simplicity and beauty deeply.