It's fine to click Tab as toggle to remove palettes or Shift-Tab to remove palettes on right but I was hoping they would do what Corel did with palettes. They have tabs down the right side for some of the palettes and click to expand palettes... click again to collapse. It does save screen space without having to use (or remember) key combos.

The spell check is a fine feature for a TEXT program like Adobe Illustrator but come on!!! a graphics editing program?

The file browser sounds like a good idea but it does take up a lot of room. When I open this file browser, photoshop goes not responding. So I won't be using that fine feature.

I must admit they did also add a Pattern Maker which might prove useful.