Well that really sucks on PD's part if that is the case.
Something's definitely changed, too early to say what for sure but it does look like the list we've compiled has now become redundant.
It's not just a case of moving to a different part of the list - the cars in my UCD after the update were different colours and had different mileages than the same cars previously (although mileages varied, they varied only within a very small range).
Things I'll test shortly but haven't had chance to yet:
- Whether multiple accounts on the same PS3 still start with the same list
- Whether new accounts match up with old accounts at the same game day
- Whether the new colours for used cars are still static, or whether cars are now different each time they appear (I suspect still static, as my UCD had two RUF CTR2s in the same colour, although that car may have a limited colour range)