Mobile support is really the seller to me on this. It's huge.

I see a lot of RPG Maker games on Steam as it is (and awfully overpriced tbh) and I think this will be an excellent opportunity to do some stuff with it! Java coding is also a huge plus. Did it say it was strictly java or are they keeping some of the Ruby in it?

I'm not really sure, but I like the mobile support too since I think that kind of RPG are not fit for PC anymore, but it's a personal opinion I guess.
It is said in the product description that it will be javascript and html5 coding, but I don't know about the ruby

I think when we get our hands on it, we should collaborate a mobile project together. Mobile games are definitely the easiest way to get the name out there, even simple games. I see many games on the app store that have 10 games in a series that are semi-popular and even 1000 people downloading a game would be enough for me I do see a lot of Final Fantasy clones though (hell, XP took many texture sprites from FF4) coming out of MV, but I would still enjoy playing them on mobile.

I personally don't like to play RPG's like the early Final Fantasy's while slouching at my computer desk and would much rather play them in the comfort of my bed.