When new-blog-templates is set to copy post & pages, it copies all entries, including revisions.
I can't see why (there maybe someone though that may wantit) you would want to transfer the post revision across, as you are just giving the new user a history of what you did setting up the template.
It is easy to remove revisions manually, but not every one would have thought of it. And I have to remember everytime I make an update to go into mysql.
DELETE FROM wp_(insertblognumber)_posts WHERE post_type = "revision";
But is would be good to have this as at least an option on blog template settings when selecting 'posts & pages', easy enough to do in post copy SQL (