I think
@Cheese is correct about the redesigned insert.
The OF1010 that I purchased from Festool Products a few weeks ago has an insert that looks like pictures
@rmhinden posted. When I got the router, the extra collet was just laying on the bottom of the systainer in the right rear corner. It looked odd at the time, but nothing appeared damaged.
Currently I have the spare collet in the small pocket on the left-hand side of the insert, where the lid illustration shows the edge guide. Although there seems to be enough space below or inside of the chip catcher for the extra collet.
I'm also considering the idea of removing the insert to install a nylon bolt with wing nut to hold the extra collet. Could do this somewhere in the flat spot near the collet wrench.