Spring ME is a micro version of Spring's dependency injection framework. You could consider it a micro version for various reasons. First of all, the framework is very small compared to Spring itself. Second, the runtime footprint of Spring ME is close to zero, which is definitely micro compared to full Spring. And last but not least, Spring ME allows you to use Spring configuration on Java platforms not supporting reflection, such as Java ME and JavaCard, or more in general micro versions of Java.
Spring ME has been presented at JavaOne. You dan download the slides here: http://www.slideshare.net/springerw/spring-me-javaone
There is also a document on its architecture, that you can download here: http://www.scribd.com/doc/8611209/Spring-ME
Send a question to the Google group: https://groups.google.com/forum/?fromgroups#!forum/spring-me