Past Tesletter articles
According to @greentheonly, the fact that Tesla suddenly froze their releases after 2019.40 just backporting essential stuff and preventing leakages, that 2020.4.1contains very limited changes, and that something similar happened before HW3 was released, make him think that Tesla is getting ready for new important hardware changes. What and when? There are many rumors but until Tesla announces them they are just that.
Read more: TwitterFrom issue #100