Guys I've found a way to fix field width problem, "_SIZE" fields were added to localization files (together with "OK" strings, I guess "save" & "unlock" might sound quite different from "OK" in some languages).
Default width is 2 (35 * 2 = 70pixels in portrait mode). You can set it to whatever you want (8 is max reasonable size). You could also use float numbers like: 5.5.
There are a couple of new strings related to dictionaries.
Please don't translate anything yet 
, wait until we are done with changes (kravitz working on "Book History" features).
dwanthny & Stephanos
Changing fonts should work exactly the same way as before, same for logos (in case that's just replacing some PNG files), as far as XML manipulation goes, starting with 1.1.0beta (which is yet to be released) there are many changes in xml files, so don't just replace existing files, use them as a base.