I just applied online less than a week ago and received a email today which says they are filling interview slots for postions open from the application pool. Essentially it says they received my cover letter and attached resume and summarized their qualifications as well as the nature of the interview. It also says they will keep the resume on file for 3 months, after that you have to send a email requesting to update your resume, so no, I don't think the rumor is true.