Spring Batch 1.0.0.m4 is available today via the s3 Milestone repository (browse at http://s3browse.com/explore/maven.springframework.org/milestone/org/springframework/batch).  See the Spring Batch downloads page for more information (http://static.springframework.org/spring-batch).

We have re-jigged the release schedule to squeeze in an additional milestone, to which Ben and Lucas are dedicated, so 1.0.0.m5 will be out in the next 10-14 days. Then we just have time for an rc1, with some contingency for rc2 if necessary, before the expected March 20 final release.