An interesting article on public folders and Exchange 2013 was published in the Exchange Team Blog. I find it very worth reading:
http://blogs.technet.com/b/exchange/archive/2012/11/08/public-folders-in-the-new-office.aspx
The public folder database was always a bit of a thorn in my side, but I can only welcome the elimination and integration of the public folders into the mailbox database. In my opinion, the biggest advantage is the integration of the public mailboxes into the DAG. The error-prone replication of public folders is also a thing of the past, but read it for yourself.
