Read about it here
Improvements in Java™ support in S60 3rd Edition, Feature Pack 2 focus on providing support for the subset of the Mobile Service Architecture (JSR-248). The goal of JSR-248 is to reduce the fragmentation of Java APIs.
- support for MIDP 2.1
- The subset of JSR-248 has been implemented. It encompasses JSR-118, JSR-184, JSR-205, and JSR-226, as well as PDA Optional Packages for the J2ME™ Platform (JSR-75), Java™ APIs for Bluetooth (JSR-82), Mobile Media API (JSR-135), and Connected Limited Device Configuration 1.1 (JSR-139).
- updated version of the Scalable 2D Vector Graphics API for J2ME™ (JSR-226)
- Java™ APIs for Bluetooth (JSR-82) has been updated to v1.1.
Related to this see the article the Mobile Services Architecture Specification which introduces JSR 248 and next generation platform for Java ME devices.
The Sun Java Wireless Toolkit 2.5 for CLDC final version is now available for download, and is it is packed with lots of good stuff, including supported for all the JSRs under the Mobile Services Architecture Specification (MSA).
Read more about at it at C. Enrique Ortiz Mobility Weblog
S60 3rd Edition, Feature Pack 2 focus on providing support for the subset of the Mobile Service Architecture (JSR-248). It look to me "S60 3rd Edition, Feature Pack 2" target low end devices. We have to wait and see when Nokia release support for the full MSA stack that target high end devices.