The Folio Society added I Am Legend to their library in 2018 with an edition illustrated by Dave McKean, and with an introduction by Joe Hill. Available in two states, this is the leatherbound, slipcased edition limited to 295 numbered copies including a signed Dave McKean art print.
Here are the front and back of the illustrated slipcase:
Here is the leatherbound binding with red stamping:
The red foil stamped black endpapers are a particularly nice touch.
I have two copies of the numbered edition in the archive; the one I purchased directly from the Folio Society on the day they went on sale (and subsequently sold out), and a second copy I was able to acquire at the issue price — copy #295 out of the 295 produced.
And although there is no difference in the specifications of the edition, one day I would like to locate one of the 20 lettered copies given to the contributors for the archive.