No cover art yet, but it appears we have a date for volume 3 of the volume release of Season 1.
Based on an Amazon listing it shows the set as coming out on May 14, 2013, with an MSRP of $19.95. The preorder is currently under $14.
Digimon Season 1, Volume 3 listing at Amazon
Thanks to WTK for the news.
Update- We have cover art that will look familiar...
Thanks to WTK again.