No. Marc Marquez is on the Gresini Ducati team, and they run last years bikes. The four factory bikes will be the same four bikes as this past year, the two factory bikes (Bagnia and Bastiani) and the two Pramac bikes (Martin and Morbidelli). The VR46 team and the Gresini team get last years four factory bikes. Gresini seems to get the two Pramac bikes (hence Marc getting Zarco's bike) and VR46 gets the two factory team ducati's.
Rossi did try to get an extra factory bike for next year. But that was flat out denied. That said, it doesn't seem to matter whether you are on this years Ducati or last years Ducati. Both seem capable. For sure, Marc Marquez is on a bike that could win the title. And it is possible he will win the title. But I doubt he will dominate like he used to. I could be wrong, but I don't see Marc being the dominating force he was back in the day.