Various versions of the firmware have been up for a few weeks now, and today Ectaco decided to make it official. From the press release:
ECTACO Inc., a New York based company best known for their jetBook budget eBook readers, hand-held electronic translators, and translating software has announced that the jetBook and jetBook LITE will now support Adobe DRM protected formats and 4 new languages. The jetBook is most known for being the strongest price competitor to the Kindle and Nook and stays steady as the leader in entry level eReaders.
The Jetbook (and Jetbook Lite) are based on hardware designed by Dr. Yi, a Chinese ereader company. I have one, actually. It is decent hardware, and now it has the software to go with it.
You can download the firmware updates at www.jetbook.net.