1 Answer

Rebranding is a marketing strategy in which a new name, term, symbol, design, or combination thereof is created for an established brand with the intention of developing a new, differentiated identity in the minds of consumers, investors, and competitors. Oftentimes, this involves radical changes to a brand's logo, name, image, marketing strategy, and advertising themes. Such changes typically aim to reposition the brand/company, occasionally to distance itself from negative connotations of the previous branding, or to move the brand upmarket; they may also communicate a new message a new board of directors wishes to communicate.
Rebranding can be applied to new products, mature products, or even products still in development. The process can occur intentionally through a deliberate change in strategy or occur unintentionally from unplanned, emergent situations, such as a "Chapter 11 corporate restructuring," "union busting," or "bankruptcy."

http://en.wikipedia.org/wiki/Rebranding