Public.Resource.org and FastCase recently announced plans to create a free database of federal caselaw accessible to anyone via the internet. The database will include all U.S. Supreme Court cases since 1754 and all U.S. Court of Appeals cases since 1950, and new cases will be added as they are published.
No word yet when the database will be released, but snapshots of the archive will be made available in early 2008.
[Press Release] 1.8 million pages of federal case law to become freely available