Rollout beta version of memmory feature as soon as possible

Please rollout beta version of memmory feature as soon as possible.
Simple solution, no complexity.
Just need such behavior:
ChatGPT able to modify custom instructions from chat without additional steps, only chat interactions.
Chat GPT can modify user custom intstructions (and we need increase their size) and GPTs custom instructions.
This will be memmory, and please pay attention that we need structure memmory saving, need JSON format.
Like key - value pairs.
This can be done very fast and memmory will be available.
And one last point, GPT-3.5-turbo and GPTs, please allow to use GPT-3.5-turbo for GPTs or increase speed of GPT-4.