I have been holding off buying a replacement iMac as I have been waiting for the release of new models. Rumours were abound a month or two back that the new redesigned iMacs would have Blu-Ray.
Generally you should never wait for new models as you will always be waiting. Buy the hardware you need when you need it.
Sometimes I wish I had done that, but my “normal” practice with Apple hardware is to buy it just after it was released. I did that with my last iMac and my iPhone 3GS.
Well the current rumour is that the new iMacs won’t have Blu Ray, they will have powerful chips, but no way to play Blu-Ray films…
A lot of this is dependent on your view if the future of movies is in physical media or downloads.
The main reason I prefer physical media is that my broadband connection has trouble with standard definition films let alone the huge file sizes that HD movies would be. Even now I have to download films from iTunes overnight to avoid hitting my bandwidth cap, the time it takes and the impact downloading has on my (very small) bandwidth, essentially stopping me from doing anything except watching the progress of the download.
The new iMacs (again according to the rumour sites) will be released before the end of October.