No, there isn't a secret leaked UCS Nebulon Frigate hidden in LEGO's new campus - Jay's Brick Blog
Nebulon B Frigate Lego Flash Sales - anuariocidob.org 1689408515
77904 Nebulon-B Frigate Set Available 11/14 on LEGO.com, Amazon - FBTB
SDCC Exclusive im Review: Die LEGO 77904 Nebulon-B Fregatte
LEGO MOC Nebulon B Frigate- Mini by 6211 | Rebrickable - Build with LEGO
Amazon.com: WOLFBSUH UCS Nebulon-B Medical Frigate Building Set, Large Sci-fi Spaceship Model, 6388 Pieces Building Blocks Compatible with Lego Star Wars QN09G09UJ18NTCOLJ1 : Toys & Games