Guice - Spring's DI younger cousin

Guice is a new dependency injection framework for Java. More information can be found using the following sources:

• Official release announcement
  
• Guice homepage
  
• TSS article (along with discussion)
• Eric Burka - Guicy Good (initial impressions)
• Paul Barry - Guice Hello World (hello world example)

I think it is positive message for Spring users. If there is anything which can be done easier in other framework then next release of Spring can be improved, simplified and even better :-)