According to MacRumors Apple may bring back their rainbow logo. MacRumors have allegedly received tips from someone who has spoken to an Apple employee in Cupertino. In what type of Apple product the old logo could be used is pure speculation. The source didn’t specify that.
The rainbow logo appeared in 1976 and was used to early 1998.
I could see that Apple would like to use this logo on new watch bands, or other lower volume accessories. We all know that Apple is all about design, and I think the time is right to use something more colorful. I see this in home decoration as well. A few years ago everyone wanted white walls, and minimalistic styles with little color use. Nowadays I notice people want more color in their life, maybe this gives the rumor some validity?
Short Apple Logo History
Here is the Apple logo history.