As far as support goes, I believe Astak does provide international support for their ebook readers. Robert will have to confirm, though, as he's "the man" around here for all things Aztak.
As far as we know now, there are planned future devices in the works, though they are most likely a year or more away at the soonest. There isn't anything new coming at all in the next few weeks that I know of.
Though right now, there is a great special going on. If you order now from
www.theezreader.com (or the Aztak website), you'll get a clip-on Mighty Bright reading light with your Aztak Pocket Pro or Aztak EZReader 6" (replaces 2 GB SD card) all for the same $199 price tag.
Besides the LIT format, sometimes the reader will freeze when trying to read MOBI files. This is both a problem with the MOBI file format and sometimes the reader being unforgiving. Other than that, all the other file formats work well and ePUB is the preferred one.