Just a quick update on my experience with this update. All went well, except I lost my haptic feedback. However, after installing a different kernel which was promoted by XDA with the leaked version of the DL09 update, it works fine. I don't know, but I might have lost the haptic feedback as a result of installing clockwork and rooting the phone. I have heard of others losing haptic after installing clockwork.
So, just an FYI...if you happen to lose haptic feedback, try installing a different kernel. I understand that DJ05 kernels work, but the one I used was 1230_NON_voodoo.zip