in case you have not noticed – Interface21 aka SpringSource (great name change, btw) runs a blog with lots of hidden treasures inside.
Recent article describes new addition to Spring portfolio which is territory within my “watched space”: enterprise integration. See the blog entry for more.
If you are in corporate space that is keen on “standards”, the comparison of Spring vs EJB3 is very good article as well. Not that EJB would matter too much these days (IMHO) – but a nice read nevertheless.