Changes I notice:
Arcane Weapon is renamed Arcane Pool (granted earlier).
Spell Combat has less penalty to hit (no penalty to concentration), can full attack, and cast a spell. Also granted at 1st level.
It also loss the penalty to Concentration to for Spell combat (which requires Concentration to succeed to work).
They can make their weapon +1 higher in enhancement at 1st level: note it stacks with the weapons enhancement bonus (as a swift action for 1 minute). So it stacks with Greater Magic Weapon I guess.
Spellstrike is now like Duskblades Arcane Channel instead of doing nothing in the old version (it just let you hold touch spell in weapon but wasting a round).
At 3rd level, they can use up Arcane pool points to do that Int to hit thing. But it seems better to make weapon higher enhancement since that last longer. Granted, you could do both.
They still didn't clear up Broad study. Looks like a copy paste. Likely there will be the return of "I can cast another class's spells topics". It should say a class you have because otherwise it makes people think you can steal other classes spells. It is meant for multiclassing as far as I can tell (at least old version was from designers comments).
Now they can use Ranged touch spells as a melee touch (combine with Spellstrike).
Concentrate still seems lacking (1/day).