 Palmer's sequel to "Emergence", entitled "Tracking", was serialized in Analog in 2008.Wormhole Press was short-listed to release "Tracking" and re-release "Emergence" as both paperbacks and in hardcover, but by October 2010 the publisher appeared to be out of business.After the novel being out of print and hard to find for over a decade, Palmer made arrangements with Eric Flint's Ring of Fire Press in 2018 to have his works reprinted.