The new magic/summon system in FFX?

After watching those movies of FFX I\'ve been trying to get concrete info about the magic/summon system in FFX (the movies I posted earlier).  It looks like you can actually summon creatures (ie Shiva and Ifrit seen), to fight right along side your party, and they don\'t leave after.  
The thing is, I really didn\'t like the magic system in FFVIII, cause if you were willing to spend an hour fighting bosses, you could draw 300 of the best spells, making your party virtually invincible.  Does anyone here have a link to a FFX site that talks about the magic system?  Or maybe someone in Japan who has seen the game?  I sure hope it\'s close to FFVII or FFIX.


EDIT:
Just so that the links in the thread going off the bottom of the page aren\'t lost to people who haven\'t seen the movie, I\'m reposting this here.

Boy, this is one game I am just dying to get!  Especially the 2 DVD version with HDTV support, and highres cutscenes!

Apologies if these have been posted, I couldn\'t find any posts previously.  They aren\'t great quality (the recording, not the game), but if you\'re like me, after watchin\' some of these you feel giddy with excitement!

Movie 1 - Fire spell (NOT CG)
Movie 2 - In game exploring
Movie 3 - Really amazing CG (BEST - OMG can you say "the spirits within?")
Movie 4 - Ice spell (NOT CG) (totally redesigned summoning system too??)
Movie 5 - In game exploration and battle

FOR ALL YOU LOW BANDWIDTH PEEP!  These are in order of size, smallest first (6.5, 8.2, 13.5, 14.5, 24 megs).  They\'re on a finiky server... doesn\'t allow infinite connections, so don\'t (like me) connect to all 5 files and try to split each into 7 streams.  You\'re better of downloading 1-2 at a time.

Here\'s a bonus:  GT3\'s newest movie, released 6 days ago.  Gran Turismo 3

its hard to tell but the battle system looks to have a few tweaks but is basically the same battle system we have had in the last few FF games.

We\'ll no more at the very least by E3 but doesn\'t look like Square wanted to innovate the game to appeal more to the hardcore with the FF movie coming out. I think FF is trying to appeal to the masses