Please visit the Toad DB2 beta page to view the beta release notes and download the latest beta installers:
http://www.toadworld.com/products/toad-for-ibm-db2/toad_for_ibm_db2_beta_program/default.aspx
If you need MSI installers you can get those at:
http://community-downloads.quest.com/toadsoft/DB2/ToadForDB2_Beta_5.6.0.2699.msi?1
http://community-downloads.quest.com/toadsoft/DB2/ToadforDB2_Beta_64bitClient_5.6.0.2699.msi?1
Jeff