Root AT&T updates vs. the Inspired DHD ROM

[Kettir]

Having successfully rooted my Inspire and installed the Inspired DHD ROM, I'm wondering how updates from AT&T will be handled, in particular the supposed software update that will enable HSUPA. Am I correct in thinking that any kind of software update will have to come through updates to the Inspired DHD ROM for me now? If so, what is the best way to keep up to date on any updates to that ROM? Thanks for any help on this.