From the spec. list it looks like there is no aftertouch; this, coupled with the plasticky look, confirms my initial feelings that it cannot be a TOTL arranger. Now, if the price is correct (around 1500 USD) it could sell well, but if it's more than that the people at Roland will have shot themselves in the foot.
Just my opinion, of course.
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.