...and your school could send your transcript now, and then update it later. That's twice as much work for them, so they might not be willing to do that.
I don't see why waiting until October 15th would hurt, it is only about a month away. However, I think that the office at your medical school that handles the transcripts, i.e. registrar, has a legal responsibility to release your transcripts to whomever you specify whenever you specify and they could be held legally responsible for not doing this.
Now, some schools may charge like a minimal $15 dollar fee to have transcripts released, but there isn't any reason why they can't press print on their computer and send them out.
The only question would be is if a PD saw your grades and made an initial impression that might help you, i.e. if you are applying for medicine then you transcripts would support that decision, might not help in peds if you only passed and you may want to get that honors from the peds-subI. If you do transmit your transcript again, then I guess programs would have to go to the trouble of possibly revaluating your application?
Anyway, I would wager it is only an extra 10 minutes for the secretary at the registrar's office to print out and mail in your transcript, which you may be paying for anyway with a nominal fee or it is included in your tuition. I would have serious questions about a medical school that didn't release transcripts until they saw fit for students participating in ERAS, and possibly could have legal implications as well. It is their job, i.e. what you paid absurdly high tuition for, to have transcripts released in a timely manner, otherwise you could file a lawsuit for negatively impacting your residency application process and illegaly holding educational records which are yours.
*Also, internal medicine programs do start giving out interviews in September so not having a transcript would hurt you as you have an honors in medicine and presumably high passes in some medicine electives too so I would argue for requesting your registrar to submit your transcript as this will help you . . . and forget about some vague advice given to all students, you are a person with your own plans for residency and since you honored medicine don't need to wait for an elective honors.
If you are going for family practice then I would ask the transcripts to be released immediately as you are competitive for many programs and could get some early interviews with your transcripts as is.