Iīd like to second Ortepīs last two posts.
And count me to the non-complaining croud. I am just waiting for ePub-support, because in german sector of the world every bookstore has gone ePub. But I am a good boy and patient
I would bet I know the reason for the delay: economic crisis. Small company, little income (niche product - small costumer circle), high expences, that led to dismissal elsewhere.
Assuming they dismissed the chief programmer (or he quit himself - happens these times as well), it might have happened no one left could decypher the code...