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RKK Energia announces plans to upgrade Soyuz-TMA and Progress-M electrical systems and software. New computer system is designed and being tested. New cable system will connect digital devices to common bus of MIL-1553 standard, with connection to ISS network in station mode.<br /><br />New Soyuz-TMAs will get 700 serial numbers, Progress-Ms - 400. First flights are planned on late 2007. See attached (green circle = vehicle shipment, triangle = launch, blue = NASA's vehicle). As you can see, since 2007 there will be at least one backup Soyuz waiting on the cosmodrome.