I'm considering buying the 27" iMac with the i7 processor next month, or early July. Is it safe to say that the higher end version of the iMacs (with the quad core processors) won't be [far] outstripped by any update, making me kick myself? On that note, does it seem likely that they iMacs will wait till September to be updated? Perhaps earlier? What improvements could really be made to the i7 model though? Thanks!