We're actually expecting several changes, since the patch is going to completely alter the talent system and spells. As far as the macros, it's not specifically to gimp multiboxers, it was to fix fallthru macros. They were never intended to work with spells on the GCD. The only reason it did work was because of latency and spell queueing.

Not that big of a deal, but it does mean a lot of macros we use won't work anymore and will need to be rewritten.