Here's what I have of this design:
Sukhoi T-60S (NOVO-C)
Wingspan: 11/22 m
Length: 28 m
Maximum TO Weight: 64,000 kg
Cruise Speed: Mach 2.0
Ceiling: 20,000 m
Maximum Range: 6,000 km
Range with Maximum Load: 2,200 km
Engines: Two Kolesov R-179-300 turbofans of 206 kN each
Weapons Load: 6,000 kg
Armament: 6 x Kh-101, Kh-15, Kh-55 or Kh-65, guided or unguided bombs
Medium-range strike aircraft to replace Tu-16, Tu-22 and Tu-22M. The initial project was begun during the 1970s at TsAGI based on the T-4MS strategic bomber. It was transferred to Sukhoi in 1981, with N. Chernyakov as chief designer. The T-60 was to be powered by two AL-41F engines, but as the weight of the aircraft increased these were changed to R-179s, resulting in the T-60S. It featured a flat lifting body fuselage and swing wings that pivoted right back to rest under the fuselage. The engines had shoulder-mounted intakes slightly forward of the wing root and two-dimensional thrust vectoring nozzles. A high-speed high-altitude flight profile with supercruise capability was planned. Weapons were to be carried on an MKU-6-172 rotary launcher in an internal bay. Originally expected to enter service in 2003.
http://www.testpilot.ru/russia/sukhoi/t/60/t60_e.htm mentions 'variable-level double-path jet, the so-called double-tube jet', with a picture. What is it?
The rumoured 'NOVO-C' designation would seem to imply there's something at Novosibirsk. But what? And how did the US discover it? I would not expect an incomplete prototype or mockup to sit outside for satellites to see.