TC 2.0rc1 appbrowser lists firewall-2.6.29.1-tinycore.tcem but there is no associated iptables.tcem provided to download.
I'm currently using the iptables from TC 1.x, which seems to work with TC 2.0rc1 but worried that iptables.tcem should be recompiled for the 2.0rc1 series.
Just realised that this maybe should have been put in the TCE Bugs section rather than the TCB one though it is not a bug with the extension itself but rather a bug with what appbrowser offers from TC base.