Quoted from OutpostKodelia:

Okay folks, here it is, the announcement you've been waiting for! We will begin taking orders for our Expressive Speaker Light kits (it's entirely unintended that this also abbreviates to ESL, so forgive us, you're going to have to type out the name so we know what you're talking about) on Tuesday September 6 at 10AM PDT!
This gives us time to produce as many as possible over the weekend, and it gives everyone a fair chance to get in the queue instead of missing it while on vacation over the long weekend. We won't be doing preorders, just regular orders, but it will be limited to around 45-48 units for the first run due to limited supplies.
We honestly don't know what to expect here. If sales explode, it may take us 2-3 weeks to get them all produced and out the door, but we'll do our best to minimize this. Should these sell out fast, don't worry... if this happens, we'll be reordering supplies asap and should be able to have the next batch available in early October.
If you haven't already done so, look over the listing. There are a few important things to consider for compatibility, and the details are all there.
https://pinside.com/pinball/market/shops/1326-ninjacamp-mods/07090-expressive-speaker-lights-kit
Once again, mark your calendars for Tuesday September 6 at 10AM PDT!

Quoted from OutpostKodelia:

To clarify, did you get the pinwoofer system with 4" speakers, or did you upgrade to 5.25" speakers? If you have the stock plates, then you're probably on the 4" speakers and it wouldn't be compatible at this time.

Quoted from OutpostKodelia:

Hey everyone, I'm sorry but I have to share a little bit of bad news. We learned yesterday that oliviarium 's father had passed away. That's thrown our speaker light kit production off a bit. We won't have the first shipment out today as planned. We're aiming to get some in the mail tomorrow, with a bigger batch going out earlier next week. We will try to keep these going out quickly thereafter, but there may be slight delays here and there as we work through her father's affairs. We thank you for your understanding as we continue to work through these curve balls life has been throwing us of late.