Now, we’re used to hearing an announcement about a product and having to wait a few weeks – or months at worst – for said product.

But today an announcement will be made it seems as if it will be a while before the product becomes widely available.

The announcement will come from Tesla as part of its Battery Day event where “many exciting things will be unveiled” according to Elon Musk.

But today we’re more interested in something that had Musk fire off a string of tweets regarding availability of, well, something.

“Important note about Tesla Battery Day unveil tomorrow. This affects long-term production, especially Semi, Cybertruck and Roadster, but what we announce will not reach serious high-volume production until 2022,” wrote Tesla’s chief executive officer.

In the thread, Musk makes mention of the possibility of battery shortages even with its suppliers operating at full tilt which points to a possibility of what we might hear about today.

We have heard many rumblings that Tesla will shift toward making its own batteries for its products. That’s not to say that Tesla will stop using the likes of Panasonic and LG for its mobile power solutions, Musk states that orders will actually increase.

That is, until Tesla irons out its own production.

Of course this is a rumour at this stage but a report from Electrek showcases a cell which an independent source has confirmed is part of Tesla’s Roadrunner project.

The battery in question could feature four times the capacity of Tesla 2170 cells produced by Panasonic at Tesla’s Gigafactory in Nevada.

The other big announcement Musk could be throwing forward to is the so-called Million Mile battery.

This power source is said to use low-cobalt and cobalt free chemistry which should make batteries cheaper and longer lasting.

This battery is reportedly being developed in conjunction with the Chinese firm Contemporary Amperex Technology Ltd (CATL) and could offer Tesla the opportunity to sell its vehicles for the same price or less than their fossil-fueled counterparts.

Whatever Tesla is announcing it most definitely has something to do with producing something new, that is going to take a while to hit critical mass.

If like us your curiousity has reached fever pitch you can tune in to Tesla’s Battery Day presentation here. The livestream will kick off with a shareholders meeting before diving into Battery Day.