Right on.
Read the rockstar page again..
They confirmed releasing the updates for current gen and are "planning" to release everything on every platform.
They did talk about the memory on last gen and its potential to hurt the overall experience.
I wouldn't get too hyped about last gen on the off chance it doesn't happen.
Seems odd to say at some point they knew they would reach a limit if it was a definite thing.
Skate 3 knocked the editor out of the park though, so, might be possible but just saying.