I renewed my Megatron permit back in January

Hint: it's easier to renew the permit if you do it before it expires. Mine had expired, so I had two police officers come to my TF room to perform a safety compliance check. Got a police event number which I put into my application form and then it was done. Previously I had renewed my permit before it had expired and did not require a compliance check. I know of another NSW collector who was in the same situation as me, and he also had a compliance check done and got a new permit.
I've now laminated my permit and stuck in on my collection room door; just so that the expiry date is visible to me and to remind future me to update it on time.
I think Missing Link Convoy will be like MP01 Convoy... they'll just do one first and if it sells well enough, it they can do more. I suppose Missing Link Convoy will be ML-01. Micron Legend was MC-XX, so AFAIK "ML" hasn't been used.