Hooray...I've had several WL books appear this week, and now when they are ordered, they actually free up spaces on my WL so I can add more, rather than being held until receipt! This is a great improvement (it may have happened a while ago, but until recently I've had a dearth of WL books, lol). I always have excess WL books on my RL and on an "Overflow WL," so every little bit helps!

It's always been that way. When you are offered a WL book, it is removed from your WL.

The books that go on hold are the other versions of a WL book. You can delete those any time, but then if the book you ordered doesn't arrive, you've given up all those spots in line.