As part of the beta group, you will automatically receive new builds of Slack's Linux application before it is available to the broader Slack audience. These builds may have some bugs or rough edges, but we won't push out anything that we know to be extremely buggy or non-functional. We humbly ask only one thing of those who join: please give us your honest feedback so that we can make your Linux experience great. Thanks!
Our Linux Beta is now available for download at https://slack.com/apps <-- No need to sign up on this form! Hurrah!