Dragonblade
Adventurer
This is just speculation but I don't think there there will be spell levels as we know them.
I think there will be a discrete collection of spells, and the "level" at which those spells are cast will be based on your levels in spellcasting classes, kind of like initiator levels in Tome of Battle.
For example, there may be a Fireball spell but there won't be any predefined spell level that it is assigned to. What it does when cast in terms of area effect, damage, and so on, will be dependent on the level of the caster casting it. So if cast by a 25th level caster, it will have effects that will be suitably epic. When cast by a 5th level caster, it will have damage and effectiveness suitable for that caster level.
Likewise, something like Dispel Magic would be the Dispel Magic we know at low level, but might turn into Disjunction when cast at a high level. Though personally I think that Disjunction is completely broken and needs to be removed from the game. But that is another debate.
Anyway, based on what I have been hearing about 4e, that is how I think it will work. Spells will just be spells with no more such thing as spell level. Their power will depend completely on the caster using them.
I think there will be a discrete collection of spells, and the "level" at which those spells are cast will be based on your levels in spellcasting classes, kind of like initiator levels in Tome of Battle.
For example, there may be a Fireball spell but there won't be any predefined spell level that it is assigned to. What it does when cast in terms of area effect, damage, and so on, will be dependent on the level of the caster casting it. So if cast by a 25th level caster, it will have effects that will be suitably epic. When cast by a 5th level caster, it will have damage and effectiveness suitable for that caster level.
Likewise, something like Dispel Magic would be the Dispel Magic we know at low level, but might turn into Disjunction when cast at a high level. Though personally I think that Disjunction is completely broken and needs to be removed from the game. But that is another debate.

Anyway, based on what I have been hearing about 4e, that is how I think it will work. Spells will just be spells with no more such thing as spell level. Their power will depend completely on the caster using them.