On Friday, we released OfficeBooks Beta version 1.5.
This release includes the most commonly requested feature from users - the ability to delete item records. Deleting seems simple - but it's remarkably tricky to handle properly from a technical standpoint. So we've taken a approach that enables you to de-activate items. This effectively makes them disappear, but it avoids complications for records that have links to the item being de-activated. Initial feedback on the item de-activation feature has been extremely positive. We're happy that you're happy.
We expect to introduce a similar method for de-activating contact records in February.