Are Canon discontinuing date codes?

I just took delivery of two lovely new Canon 70-200mm f/2.8 L IS Mk IIs. I was making a note of the serial numbers etc for our database, but I can't find any date codes on either of the lenses.

Canon seem to have changed their serial numbering scheme too. The last four 70-200 Mk IIs I bought all had 6-digit serial numbers in the range 11xxxx to 13xxxx, which suggests they were genuinely "serial" numbers. But these latest two have 10-digit numbers, 692000xxxx, which looks to me like the 692 is a product code or somesuch and the last bit is the "serial" part.

Can anyone else confirm / deny that date codes are on the way out?

Is the date code embedded into the new serial numbers, and if so how?

I just picked one up today, on the way to work.

On the invoice it has a 10 digit code 210015xxxx

On the warranty card 15xxxx

I haven't checked the lens for a date code but will do so when I get home.

Date code should be on the mount.

Ok. I checked. Date code is UY0601

I have just fooled around in the house and this is one sharp lens and a fabulous IS.