Don't have the 3.5 books, still...
I don't have any of the 3.5 books. In fact, I shouldn't be seeing one until august as I live in Brazil and rpg books are hard to come by here. However, as I'm deeply interested in the 3.5 revisions and have been scurring these posts for scoops for a long time now I felt like chiming in and giving some info.
I would recommend people with questions to take a look at Olgar Shiverstone's "Compiled 3.5 Revisions" thread:
http://enworld.cyberstreet.com/showthread.php?s=&threadid=53488&perpage=40&pagenumber=1
This way you don't have to wait for Cegararch or Brekki to post answers.

If possible, edit your posts as answered so Cegararch and Brekki don't spend precious time flipping pages to lookup info you have found already.
Lady Isis
Animal companions were partially presented on the 3.5 druid's scoop at the WotC site (
http://www.wizards.com/default.asp?x=dnd/rs/20030610a ) . The table with the animal companions advancements are further explained at Olgar's "compiled 3.5 revisions" thread.
Delgar
I would bet Ray of Fatigue works similar to "Waves of fatigue" spell, that is at WotC's page (here:
http://www.wizards.com/default.asp?x=dnd/rs/20030603a ).
But I agree we don't know save, range and components.
Dagger
Ranger's spell list is at Olgar's thread. And there is a thread dedicated to discussing the changes on that list. (Most exactly there is a thread dedicated to debate the changes of each one of the spell lists we know of this far: Bards, Clerics, Paladins and Rangers)
Arcade
For Identify and Analyze Dweomer you have scoops at Olgar's thread too. However, as none of the scoops I've seen so far had the spells' texts typed in their integrity I would rate the information as a notch less than
solid. (I still have trouble believing they give Identify the ability to divine EVERY power of an item!

)
Talix
The Monk's chagnes seems to be one of the most popular questions on the revision. Lots of places to check that info. Olgar's thread, once again, has some very good info, but you can look up the information on the scanned(!!) pages of the PHB at
http://www.gamingreport.com/modules...le=index&req=ShowFile&file_wrap=html/dd35.htm an official information if I'm not mistaken (with all the appropriate legalese).
CylentWolf
The Craft Construct feat came out in some past issue of Dragon Mag. You can check it at Olgar's thread.
Hope I was of any help
