An external reviewer spotted a rather nasty bug in the signature of a new method defined in the Lambda (JSR 335) Specification [1]. We decided to fix this in SE 8 because if we don't fix it now then we can never fix it, at least not without breaking compatibility.
As a result, new builds of the Specification, RI, and TCK are in the works and will be made available to you shortly for review. Stay tuned ... - Mark [1] https://bugs.openjdk.java.net/browse/JDK-8033590
