You can now browse the catalogue as a flat grid instead of the rotating cylinder. Same panels, same previews - just laid out in rows and grouped by topic, so you can see a whole section at once and jump straight to what you want. Switch between the two with the button in the top right. Your choice is remembered, so you only pick once. Scrolling works with the mouse wheel, the arrow keys (Page Up/Down and Home/End too), or by moving the cursor near the top or bottom edge of the window.
Thanks to everyone who asked for this in the reviews and the forum - several of you said the cylinder was getting in the way, and you were right.