The CiviCRM Subscribe block should now be working. See #927144: 6.x CiviCRM Subscribe block does not work - queries non-existent table.
Also, an upgrade routine has been created to ensure the proper database tables exist regardless of what version people are upgrading from.
Patch #249530: CiviCRM 2.1+ compatibility by EvanDonovan, berenddeboer, rpalamo: Make 6.x branch compatible with CiviCRM versions >= 2.1
This module should work now, unpatched, for Drupal 6.x. Please report any issues so that they can get fixed in the next beta, and then a full release made.
Changes since DRUPAL-5--1-3:
Fix info file version so that update_status works
Per the conversation on the devel thread, I'm creating new latest releases of several modules.
Changes since DRUPAL-5--1-1:
6.x development version
Latest stable version, this should of been created some time ago!
5.x development branch