I've just released Infinispan 4.0.0.ALPHA5. Yes, I know you were expecting Beta1 already, but it is taking a little longer than anticipated. Anyway, Alpha5 has got some cool new stuff you'd definitely want to check out.
- Migration scripts for EHCache
- Internal performance improvements
- Newer, faster JBoss Marshalling
A full changelog is on JIRA, and this release can be downloaded on our downloads page.