They are older and EOL. They are a nice managed gig-e switch though for what you can buy them for used. I believe they are layer 2 only.
Correct, they're layer 2 switches. Support is supposed to end on October 16, 2011, so we'll be upgrading ours soon. For someone that wants to save some money with a used switch, I think they still have a few more years of use as a good GigE switch.
Another option now would be the 2960S. We chose the 2970 when the 2960 was just a 100Mbps switch, but that has changed with the 2960S series.