From inspecting platform package managers on 3/26/2013.
|-----------------+------------------------+------------------+------------|
| distro | package name | software version | repository |
|-----------------+------------------------+------------------+------------|
| centos-5.x | mysql-server | 5.0.95 | base |
|-----------------+------------------------+------------------+------------|
| centos-5.x | mysql51-mysql-server | 5.1.70 | base |
|-----------------+------------------------+------------------+------------|
| centos-5.x | mysql55-mysql-server | 5.5.36 | base |
|-----------------+------------------------+------------------+------------|
| centos-6.x | mysql-server | 5.1.73 | base |
|-----------------+------------------------+------------------+------------|
| amazon-2013.03 | mysql-server | 5.5-1.6| amzn-main |
|-----------------+------------------------+------------------+------------|
| fedora-19 | community-mysql-server | 5.5.35 | base |
|-----------------+------------------------+------------------+------------|
| debian-7.x | mysql-server-5.5 | 5.5.33 | main |
|-----------------+------------------------+------------------+------------|
| debian-8.x | mysql-server-5.5 | 5.5.35 | main |
|-----------------+------------------------+------------------+------------|
| ubuntu-10.04 | mysql-server-5.1 | 5.1.41 | main |
|-----------------+------------------------+------------------+------------|
| ubuntu-12.04 | mysql-server-5.5 | 5.5.22 | main |
|-----------------+------------------------+------------------+------------|
| ubuntu-13.10 | mysql-server-5.5 | 5.5.32 | main |
|-----------------+------------------------+------------------+------------|
| smartos-1303 | mysql-server-5.5 | 5.5.33 | 2013Q3 |
|-----------------+------------------------+------------------+------------|
| smartos-1303 | mysql-server-5.6 | 5.6.13 | 2013Q3 |
|-----------------+------------------------+------------------+------------|
| omnios-151006 | mysql-55 | 5.5.31 | omniti-ms |
|-----------------+------------------------+------------------+------------|
| omnios-151006 | mysql-65 | 5.6.13 | omniti-ms |
|-----------------+------------------------+------------------+------------|