I've targeted the following JEPs to JDK 8 M6 and updated the milestone and feature pages [1][2] accordingly:
138 Autoconf-Based Build System 142 Reduce Cache Contention on Specified Fields 143 Improve Contended Locking 147 Reduce Class Metadata Footprint 148 Small VM 149 Reduce Core-Library Memory Usage 155 Concurrency Updates (jsr166e) 161 Compact Profiles 162 Prepare for Modularization 165 Compiler Control 166 Overhaul JKS-JCEKS-PKCS12 Keystores 170 JDBC 4.2 171 Fence Intrinsics 172 DocLint Work on these JEPs has been underway, to varying degrees, for some time, so there shouldn't be many surprises here. - Mark [1] http://openjdk.java.net/projects/jdk8/milestones [2] http://openjdk.java.net/projects/jdk8/features