There is an image of this cultivar on the Hosta Library. From the photo, it appears to be a large size hosta with dark green leaves and yellow medial (center) variegation. It is a fast growing sport of H. 'Orange Marmalade' that has pale lavender flowers from mid-July into August. This non-registered cultivar was originated by Marco and Joyce Fransen of Fransen Hostas in the Netherlands.  

One resource stated that this hosta is possibly the same as H. 'Chart Topper'.