Slope Brick 31 width 3 and 4 in set 77256

[Gabriel Läufer]

In the new Speed Champions set 77256 BTTF De Lorean, several new parts are introduced -among the already existing bracket 7674, but also two new cheese slopes (Slope Brick 31, 1 × 1 × 0.667) in widths 3 and 4. I have already created both parts (WIP), but I can only find the element numbers, not the design numbers. Can these parts already be submitted, or do I have to wait for the offical release? Has someone else created them before? Does someone knows the part number?

[Orion Pobursky]

Since the inventory site and the BI app won't post until the set is released, we need to wait until then or another, reliable source reveals the number.