The original nominator has specified that they would like the tag to include the movies. I have no problem with both books and movies being in the tagset as separate fandoms if you and the other nominators are okay with it as well.

If you were planning on using on some of the existing relationships currently listed under the All Media Types tag, I can add them into the book fandom tag as well, just let me know. I know it might have affected your nominating choices since the AMT tag was already accepted and visible in the tagset.