Below is an email from their agent:
RTX are going to have to cancel their entire US Tour due to a family emergency that the guitarist is experiencing. It is just impossible at this time for the band to find a way to make this tour work given the circumstances. On behalf of Jennifer Herrema and RTX, we are extremely sorry about this cancellation as I know that this is a huge disappointment and jeopardizes the entire show. This was the band's album release tour and the band too is heavily affected by this cancellation as now the band will have to wait till 2009 to promote this new album.