Bambulab's homepage has a cryptic tease of a September 20th announcement (https://bambulab.com/en-us)...

One speculation is that the dots represent nozzles, and there are four nozzles (one per color). This would be... quite neat! This market resolves YES if and only if Bambulab announces a printer or toolhead or upgrade kit or product that is a toolhead with multiple nozzles. If not-in-use nozzles are stored elsewhere (say, prusa XL style tool-head swapping, but for nozzles), this will resolve YES.

The spirit is "multiple nozzles, one toolhead," and please comment for any clarifications!