kafka_2.8.0/0.8.0 pom seems invalid

Hi All, I was trying to upgrade the kafka to 0.8 but I get an empty jar
file for
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.8.0</artifactId>
<version>0.8.0</version>
</dependency>

However
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.8.2</artifactId>
<version>0.8.0</version>
</dependency>

is good for me.

BTW from the download page I can only see kafka_2.8.0_0.8.0. Where can I
download the scala 2.10 version. Is there any difference between different
version?