The firmware updates on the English version seem to lag behind the Japanese quite a bit. As someone who's currently considering buying a Sony DPT-S1, this concerns me.
On the
update details page for the firmware version 1.4 (Japanese only) there is something that according to Google Translate sounds like copy/cut/paste/move function for handwritten annotations. This would be a very useful feature in notetaking as you could rearrange your notes by moving parts around, make space between them to add sidenotes and retroactively organize them. Can someone confirm if this currently isn't possible in the English version?
Japanese firmware versions index