It felt like the press might have taken advantage last time with the pre-buying just before the release. Maidsafe were very sensible/honourable to not move any coins to exchanges until after the press announcement, but it felt to me a bit like some of the journalists and their pals might have been less scrupulous.
Perhaps it is just the press buying their insider knowledge again? Or perhaps you're right and it is unfounded, and just crypto community optimism that it is coming very soon. I'm not sure it needs to be a pump and dump group though does it? There's a lot of excitement about this release. It's natural for prices to spike as we get closer to vaults-from-home again isn't it? Traders also want to profit from the rise they are predicting. When they take that profit the price will fall again. That doesn't make it a pump and dump though, it's just a typical, unregulated, volatile, small, purely speculative market imo.
I hope your prediction is wrong anyway, I really want to see vaults-from-home working smoothly. I'll be pumped if we get some vaults to play with tonight, and I won't care if the price jumps or dumps in the short term, it's all good news when things are moving us towards our goals :). Meh to short term prices