The new NSU has promos P1, P2, P3, 1 per issue

I wonder if there will be more in the future ?

The Cryptozoic Entertainment web site lists the following promos:

P4 - Emerald City Comic Con (March 14-17, 2019)
P5 - WonderCon (March 29-31, 2019)

P6 at the Philly show

Looks like there was a P7 at San Diego

Need P4