There a version 4.5.2? Latest I've seen is 4.5.1 SP 2

For the record, I have heard good things about CF MX. I looked at it a bit after reading this thread, and if it wasn't for the cost, I'd consider using it on some of my independant projects. For now PHP, Zope and Java along with a few helper frameworks here and there seem to fit my needs very well.