The report of Marisa Spiros about the 9th Global Local Branding Alliance (GLBA) conference was published in the April issue (2018) of the Food & Beverage Reporter (Johannesburg).
"Limited editions" are another innovative arm that doesn't necessarily involve added value but that can build brand loyalty.
Limited editions can contribute to regional relevance, as GLBA's Russian partner Anna Lukanina of Depot WPF, showed in her conference presentation. One example is Lipton's Tea packaged in matryoshka (Russian nesting) dolls.
You can read the conference report (pp. 26-28) by clicking on the link - http://www.fbreporter.co.za/2018/fbr-april2018.pdf