I would imagine this is part of why the [HUD] has been converted into building blocks in recent patches?

Yeah, pretty much it. It looks exactly the same as it did, but it is, in fact, all new. And now we have the ability to, say, style it by just applying one style sheet, much like web CSS. You can change the theme with a very simple change, which you can't do with Flash. You just have to remake the entire asset. And then you've got two things to update every time you want to add or change something.

So this new Aegis style, is it going to be different?

It's going to be very different to what's in-game and what people have seen.