New spec is on the left. Mislabeled as Singapore
Should increase lateral expansion, improving diffuser efficiency
Still seems basic in some details compared to the best. The front strakes are pretty basic with no obvious 3-dimensionality to them (such as the RB has) and the overall shape is pretty simple. The RB has straighter strakes inboard that curve outwards markedly near the edge which (I assume) gives a stronger vortex and also allows them to control that vortex better as it's near the edge details.
They changed the diffuser sidewall at Spain which is, along with the floor edge changes, the sum total of their floor upgrades since Monaco
There were also changes made to the floor body for "local load" at Spa.
I don't think the floor they brought in Monaco is completely new either. It's still the Bahrain floor with a bunch of small updates to the floor edges and diffuser area.
Ok so quite a bit more changes than I thought