Kate has her own website now! It's at www.KateTaylor.com. She also has a new album coming out soon. There's a single you can get this instant; she and her husband and brother wanted to resurrect the rest of the verses of Auld Lang Syne. The single is a benefit for the Elizabeth Glaser Pediatric AIDS Foundation. Why not go read about it?
You can still find more info about her at James Taylor Online. Including pictures. She has the same eyes as James; it's kind of scary.
(For more on siblings of famous singers, you might want to read poor Christine Lavin's Brother's take on this.)
You can also garner info from online record store CDNow, but it's probably better to support your local, non-chain-owned record store with your purchases!