How to indentify new Svetlana KT88?

Hello,

Heard it through the audio grapevine that Svetlana's current production of KT88's are now manufactured according to McIntosh's specifications. These new tubes are supposedly better sounding than the earlier versions. How do you identify these new tubes from the earlier versions? Surfed the web and found some pictures, some tubes come in blue boxes, some in red. Some sport the logo with the big "S", and some with the spider-like symbol ( a circle with 3 lines protruding from the top and bottom). Would highly appreciate any info to clarify this matter.