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If the rumors are true for part 2 we will be getting white soudnwave based on an alternate animated toy that did not see release.
However Blaster is supposed to turn into a ground vehicle and be a direct retool of soundwave. But part 2 Soundwave will just be the ground vehicle blaster body with a soundwave head.
Kind of like how that weird multipack
Red Protectobot Hotspot was a weird tooling of Solar Storm Grappel that also used inferno bits.