I keep up with current stuff, latest and greatest for my job area, Spring, Hibernate, different web stacks, .net4/.5 etc (consultant, cant sell myself if i dont).. But it is not like I see the all good and true in these techniques .. What I see is the industry "trying" to convert programmers into frameworkers, and i suppose thats in the interrest of some big corps, but I dont see them improve on productivity at all. It is just shifting the complexity to another area. Most often an area of more "locked in".
In regards to webapps, in context of java, what has truely been a game changer since servlets and stored procs? A lot of buzz and hype and no real benefit to the contractor. (yea, I know, I am old like that).