Amazon has published the paper editions of Adventures in the Liaden Universe® Numbers 25 and 26. The paper books are not associated with the ebooks, but, yanno, maybe that’ll happen at some point down the road.
Right now, however, here are your links:
Cultivar: Adventures in the Liaden Universe® Number 25
Heirs to Trouble: Adventures in the Liaden Universe® Number 26
Have fun.