Today I upgraded to version 2.1 of WordPress. As I’m writing this I am deliberately making typos to see how the new in-built spell checker works with this. Also, it has a tab set at the top of the editor with a visual/code section. No longer do you have to pop the HTML window to edit or tweak the code or add new code.
PS. Just spellchecked, but I don’t see the point. I use FireFox and that already has that built in. I understand not everyone does, but meh, nonetheless.