I tend to think that means they are still talking even now. If there was nothing they would have put out an "IDSY signs deal with Joe's Trucking" PR.
I also think it means they are talking to Enterprise as well right now and gauging their interest. Could get interesting.
Would imagine an SEC filing, regarding status of exclusivity agreement - as seems to be material information.
unless they are talking to Enterprise and want it to expire. an SEC doc needs to be filed within 3 days. so talk to others and make Avis sweat it out.