So, I've been waiting for a new Mac Mini to be released. Initially, I used my 2010 as a media center in my living room, but recently pulled it out of there and put together a desktop workstation as my needs have changed.
Suspecting that the ODD would be pulled, I started ripping all of my media now, so the work would be done in time for the new machine--just in case. Really, it needed to be done anyway. I want to be able to stream my media to any TV in the house--which I can now do.
For me, the ODD won't be missed, but the faster processor and better graphics will be greatly appreciated. For those using the MM as a true media center, I can see how the ODD not being there would be a concern.
For those who intend to do that, I'd suggest getting the old model. It looks like the refurbs are selling for under $500, or I'm sure you can find deals on Craigslist or eBay in the coming weeks. The old one isn't as impressive spec-wise as the new model, but it's no slouch either. For a media center PC, it will do just fine.
For everyone else, remember that yesterday, the older and slower Mac Mini was $699 (with an ODD). Today, the entry level model is $599, and while it doesn't have the ODD (which quite a few people don't want or need anyway) it does have specs that match the entry level 13" MBP--which I also own and is consistently twice the speed of my C2D Mac Mini.
There's really nothing to complain about here, but it seems that some people just have little else to do.
I'm quite happy with the new specs, and will likely go for the i7 model because I'd like to keep it around for a few years.