Glo Highlight and dictionary: any book or Kobo books?

Hi,

Tomorrow I'll probably buy a Kobo Glo. One quick question, here:
http://www.the-ebook-reader.com/nook...obo-touch.html

They say that "Has highlights and dictionary, but only for Kobo ebooks.". I'm sure that I've read that if I use the last firmware I could use the dictionary for any book, right?
What about the highglights? Any epub or only the Kobo ones?

Thanks!