Henry
Autoexreginated
for some reason that sounded a lot like a 4e game.
How so? We have a thief with variable backstab, wizards and clerics with daily spells, and saving throws that people roll defensively against, as opposed to being static target DCs by attackers. You have some 4E elements mixed in, but reading that report in terms of what people could do, as opposed to terms being thrown around, it looked a heck of a lot like many D&D games prior to 4E that I've played.
Even the Invisibility, which works like 4E, would still easily fit in an AD&D game -- you can move or do whatever you want, and the invisibility stays up - but as soon as you attack, you drop the invisibility.
Are there feats and trade-offs mentioned that give you more 4E-ish stuff? Yes, but the core is looking more like 1E D&D to me. As mentioned, this just sounds like a mixed playtest to test a lot of options at once to see what sticks.