We have not announced any release or beta dates for GoBinder 2006.
There will be a beta, probably public. No dates announced for that either. If there is, you will certainly hear about it on TabletPCBuzz.
GoBinder 2006 is a major database upgrade. You will be able to import your old database, but GoBinder 2005 will not be able to read the new format.
For that (and other reasons) we will ensure that you can run GoBinder 2006 side by side with GoBinder 2005. This is also true for the release version, so that you can try the program, and if you don't like it (what are the chances of that) revert back to GoBinder 2005.