Kingdom Hearts II The letter, is it the same?

at the end of KH1, Pluto has a letter in his mouth with the king's seal. then sora, donald, goofy chase after him. but do they ever actually get the letter? the events of KH:CoM and KH2 take place, but they never opened the letter. then at the end of KH2 sora gets A letter, so is it the same one? Nomura said he was going to show the 3 of them packing for a trip, what was it about. perhaps KH:BBS? thats why we're getting 3 games that tell about the past.
still, is it the same letter?

 

I think the little reading part at the end of KH was the letter. I think they eventually got the letter from Pluto.

 

I think they're different letters entirely. the one from Pluto is probably so Sora would follow him to where he ended up and the one in KH2 is for... something else.

 

I think that the letter Pluto had was just used to make people follow him around and so they did in KH and CoM.

The letter in the bottle, I am almost sure Mickey probably wrote that to give to the three as an upcoming thing he would need them to help with so it's a precursor to KH3. It kind of gives away that there's going to be another game with the 3 later on and as was mentioned, Nomura was planning on showing them packing to get ready to go but took that part out as it seems the message that they would be leaving soon again any way was hinted at strong enough with them just coming together and reading the letter.