Looks like I was right Mastered UI will debut on March 4th and the March Ichiban Kuji's go on sale March 10th this explains why there was no UI Goku reveal. We will also have the WCF Saiyan Bravery Vol 2 UI Goku that will be out in what should the 3rd week of the month not expecting a reveal for that either, then the UDM #30 gashapon due at the end of the month. Speaking of UDM here is #30, and #31 again:
[spoiler]

[/spoiler]
As you can see #30 is "???" next to Son Goku meanwhile #31 next to Son Goku it has 身勝手の極意”兆” aka Ultra Instinct "Omen".... and then there is
VS gashapon too but the final piece of evidence that mastered UI will be different is the May Ichiban Kuji's:
[spoiler]

[/spoiler]
As you can see 2/3 Goku's here are blanked out, the 20cm one which is Prize A and the one on the bottom right which is the 16.5cm double chance Prize however... the other 16.5cm Goku is show and it is the ”Omen” we know of, buuuuuut the labelling makes it a point to label it "last one Prize
version" keyword version they are making a point it is different and lastly Banpresto's American branch have labelled the 20cm Goku has
Goku (Special Ver.). And then there is
BlueBasilisk's point regarding Dokkan evidence. There is also the fact everything that has shown UI currently has it labelled as 身勝手の極意”兆”/Ultra Instinct "Omen". Oh and the above "wafer" I posted has a secret rare that hasn't been revealed...
Mastered UI will look different, I am certain of it now.
So I predict a final Premium Bandai HG set that will feature Vegeta's new form, Mastered UI, #17/Freeza/Jiren/Toppo.
This is the first time a form has been under such secrecy and releasing it immediately following the debut in the show is gonna synergize well. I've been berating the marketing people for a while but I'll have to eat a crow looks like they planned this well... Total shocker. Fair play, though, I give them shit a lot of the time but they done this right.