"Remembrance Agents are a new class of applications that watch over a user's shoulder and suggest information relevant to the current situation. While query-based memory aids help with direct recall, remembrance agents are an augmented associative memory. For example, a database or search engine can answer direct questions like "how do I get to Central Square?" Remembrance agents instead offer the kind of information you didn't even know enough to ask about, like "there's a great coffee-shop just around the corner."
Suggestion output is now read-only.
Print hash-marks instead of numbers for suggestion relevance.
Can set to automatically change databases based on major-mode and buffer-name.
Can customize "C-cr" prefix to a new key combination.
New query-length normalization for the information retrieval engine."