Absolutely. As I said from the start, never confuse percpetion with truth.
A truth can be perceived differently, but that does not alter the status of that truth- it just means someone (or perhaps everyone) is seeing it wrong.
If today's 'truth' is not permanent- as in you are saying it will be replaced by something better in future- then today's truth is simply incorrect, and maybe the next one will be, and the next and the next- but the fact is that there is, somewhere, an objective fact about every single thing. Even if it can never be perceived in the entire life of existance itself, the fact is still there.
And as VVD alreayd says, in your example, probably all of the people are telling the truth as best they can see it. But their knowledge of what the objective truth is might be severell flawed. In the example, even 'nothing' is a conceptual entity that was being observed- or if you prefer, the air just above the table. Each person has an observation, be that of a plum, an apple, or bugger all. it's possible that one of them is right and the other two wrong. It is possible that none ofd them are right. it;s even possible that what is actually there is a strange sci-fi object that is in fact a plum, an apple and nothing at the same time- impossible to our modern logic though that is.
But the nature that a correct, factual answer exists is continuous and can never be denied. That answer is the truth.
The idea that facts can only ever conform to people's perceptions is known as Personal Verificationism, and is a deeply flawed philisophical idea. The reality is that fact exists regardless of perception; perception is simply a (normally flawed) effort to discern the truth. It is not the truth in of itself.
According to PV, if someone used a holographic generator to alter the way the stars look (so, say, he takes away the constellation of Orion), the fact that everyone would perceive the fact that Orion is not there would mean that it was actually, factually, not there. But the truth is that IS there, even if no-one can see it. Even if no one has ever or will ever see it, it would still be there.
Hence, truth is objective. In fact, I would label what has been called 'subjective truth' above as opinion, not truth.