Valve told us we could swap LCD drives to OLED provided they were up to date.

At least one reliable source told me that his swapped 3.5.7 drive was producing some interesting things - so far, he noted that the battery indicator in Desktop mode was missing. He was pursuing a possible sleep/battery issue when he noticed this.

Reflashing from the system recovery image? The indicator was restored.

Not everything may be as it should be with drive swaps. If you have found anything like this, please share with everyone. Thank you.