The Sidrial TC 1.1 upgrade with the winning levels of the Sidrial Map Building contest is now available:

Sidrial TC 1.1 Upgrade (zip, 11MB, requires original Sidrial 1.0 installation)
Sidrial TC 1.1 Full Install (zip, 132MB)

Be sure and check out the official FAQ for answers to commonly asked questions regarding the Sidrial Total Conversion.