From http://www.hbo.com/sopranos/

HBO has scheduled an encore run of the first three seasons of THE SOPRANOS back-to-back for the first time ever. Beginning Sunday, Aug. 12 (8:00-9:00PM ET), every Sunday night for 39 weeks, concluding in mid-2002. All three seasons will be presented in widescreen format, marking the first time seasons one and two have been seen in widescreen on HBO.

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P.S. One press release announcing there'd be a Season 5 said Season 4 was to arrive September 2002, another said June 2002. We'll just have to wait (a long time) and see...