One of the Thirteen Principles of Faith , which I reproduced in my original response, clearly says that the belief that the Dead will be Resurrected is a central belief of Judaism, and denying it is denying the Torah just as denying that Moshiach will come is considered apikorsis.
It is interesting that any time Moshiach is mention Tag will chime in with how Moshiach doesnt have to do miracles, yet nobody is saying that he has to. It is clear from the laws of Moshiach, according to Rambam, that this is the case. So why the need to repeat it over and over again? Nobody is claiming that he will have to do miracles.