This has been discussed before, but thought I would bring it back up. Right now we have products released from SWL01 (the core set) to SWL29 (the premium large bases). We have announcements for SWL31 (Jyn) through SWL38 (Bossk). We do not have any information on SWL30 (either by of an article or a release).
For the most part, things have been released in order, the main exception being the E-Web and 1.4 Laser Cannon, which were released after Han, Commandos, Boba and Scouts, even though they had lower product numbers. Similarly, Han, the Commandos, Boba and the Scouts were teased before the E-Web and 1.4 Laser Cannon, so many of us noted their products codes were unaccounted for.
So, that gets back to the question in the title, where and what is SWL30? As it is the only empty product code among what has been announced/released to date, does that suggest that it might be some neutral release (like Priority Supplies)? I hope it is something like that, would be interesting to get some more mission, battlefield and condition cards to add more variety to the types of possible games. Would also be great if there were some sort of minis/terrain to go with those missions. (I know one suggestion I have seen from people is a "rescued the downed pilot(s)" type mission, would be great if it was something like that).