Actually, advertised & supported! First seen in this post:
https://www.mobileread.com/forums/sho...44#post1599444
Supported File Formats
Books: EPUB, PDF and MOBI
Documents: PDF
Images: JPEG, GIF, PNG, BMP and TIFF
Text: TXT, HTML and RTF
Comic Books: CBZ and CBR
http://www.kobobooks.com/touch_tech