UCAV/CCA "class" is best determined by size rather than geometry.
YFQ-42/44 are about 6m long, from what I've read, and based on satellite imagery those display trucks are 12m long total, so the size of that specific UCAV/CCA in question (considering its tail overhangs the rear of the truck a few meters) should probably be about 10+ meters long, so somewhat larger than YFQ-42/44 class and thus likely a bit higher end.
That said we also know from the satellite imagery that even among the UCAVs/CCAs displayed, there will be some which are a bit smaller and some a bit larger, and there are likely other UCAVs/CCAs that won't be displayed in development/testing/service as well.
All of which is to say, it should be logical to expect that the PLA will go for a UCAV/CCA force which covers all categories, from high to low end. Even some previous statements from the grapevine that the PLA will focus on high end CCAs doesn't really rule out the likelihood of lower end CCAs and UCAVs being procured as well, because ultimately low end CCAs/UCAVs can just be thought of as high end reusable "effectors"/payloads anyhow.
