Adjunct Law Prof Blog has a post linking to information on upcoming internet repositories for federal case law, and wonders whether new services coming on line will spell the end of Lexis and Westlaw. I suspect these venerable pay services will stay one step ahead for some time.
I remember seeing a debate in an internet forum once over whether it might be considered malpractice not to conduct computer-aided research. If there is a big gap in services, or the newer services cannot replicate book research, then perhaps that debate will turn to whether it is malpractice to use a less powerful computer-aided research tool.