Yes and no... they don't want to scare you with a massive list of books that you think you have to buy!! Usually, they will give you a reading list, and then will emphasise the fact that you only need to buy a certain number of them, depending on your own personal preference.
Again, it is better for them to give out the list as "late" as possible (Birmingham didn't give one out until a couple of weeks AFTER Freshers Week!), as it gives the year above a chance to get out their old books and offer them for sale at the classique Book Fair, which means that you'll save quite a bit of money in buying books. I know someone who forked out around £250 on new books, whereas I paid £120 for 12 books - so it pays to wait and see if you can get them second hand, which is why our Uni doesn't give out a reading list early -- not everyone is made of money!
Tim.