I purchased the latest version of dw2xls back in April, just prior to visiting Charlotte for the PB conference. To that point there had been no development on the website or dw2xls since 2012.
Upon checking their website now, there seems to be a new version released in the last number of months...a 3 year gap...which they are selling with Appeon support.
Have contacted them for more information and will post back with their reply.