You're right newbee--sorry. I thought I'd checked the regular 4.12.11 release, but it turned out to be an older beta. Took a while to install the 4.12, but sure enough, no "last modified" as you found.

Anyways, the feature is in both the 4.13.2 and 3 betas.

The separation of the delete function between the download pane and the Library is actually something quite useful, since you can clear a download, but later resume it from the Library's Incomplete folder. At the end of most session, I like to delete all the 0KB files in the incomplete anyway and usually all the others too. Otherwise they tend to pile up and slow down LW it seems.

Cheers.