I don't think anyone really knows except the schools. They can change the papers each year without telling anyone. I guess you can assume that they are the same type as last years but it is worth practicing with different types just in case.
If I were them, I'd want to switch the VR from Moray House after the fiasco at St Michael's last year; they can hardly afford a mess like that in the current climate. It would indeed be prudent to practise with a range of publishers.
Blanca, you could try asking all the schools, even the ones you haven't applied to, since they share the tests, but they might say that secrecy is necessary for fairness. They might suggest certain practice materials, but that may not mean that the actual tests are from the same publishers. Do let us know if they tell you anything, though.