Evenglare
Adventurer
Listening to the way the developers are talking, they are still focusing on the core of the game.
The sorcerer and warlock are probably as close to modular spell casters as they are going to get though unless they get a whole lot of feedback telling them it's not what we want. From what I've heard recently it may be such that there really isn't that many people that really care about alternative methods of spell casting. Other than some really loud voices on the forums. A hand full of verbose forums goers are not going to make much difference if tens of thousands of players don't care or don't want anything other than vancian casters.
From listening to the DM seminar they seem to be looking at the different casting methods being built into the different classes presented and if you want a spell point wizard you'll need to re-flavor the sorcerer or just play one as written.
I sincerely hope this is wrong, if it isnt then they have lost a customer. This isnt what was conveyed to me initially. Just because a sorcerer's magic originates from a different place doesn't mean magic should work different. If that were the case, since a cleric's magic originates from a God then their magic should work differently from a wizard , who's magic originates from the weave (or wherever magic comes from)