Are the topics like Spring WS & Spring security covered in this book ?
I am having the second edition of this book and from the first chapter (meap) this version just updates the users with spring 3.
Are there any more things that make this book worth a buy?
I answered this more or less in another thread, so I'll just address the Spring-WS and Spring Security portion of your question here...
Spring covers so much ground these days that it would be impossible to discuss it all in a single volume. Therefore, as I approached the 3rd edition, I had to carefully choose what topics to include and which ones to leave out. As much as I like Spring-WS, it didn't make the cut. Even so, up until very recently (past few weeks), Spring-WS hadn't changed much since the 2nd edition of the book was printed, so if you need to read about Spring-WS, you can certainly pick up that old edition.
Spring Security, however, is covered. In fact, it is updated from the 2nd edition (which covered Acegi Security) to cover Spring Security 3.