The Aeros is constantly in progress and we cannot speed updates beyond the time they need to be made, tested, and released.
The last beta (4.2.0) was a work in progress and only for the purpose of getting feedback on the new features included specifically, this was released before the holiday break and that is related to why we were slower than expected.
We fixed all relevant reported bugs at this point along with other bugs reported in the time that 4.2.x has been in progress. We are hoping to have a clean version to release as beta imminently, but we do not have and do not give hard dates.
Though we know users may prefer it, there is no use in giving a hard date because it may change, the work we do with the Aeros (like with any digital product) is not perfectly predictable and we have a lot of use cases to consider which could prolong the releases unexpectedly.
We are also working on 4.3.x and 4.4.x in tandem, so even though it feels slow there is much progress underway and coming to the Aeros in the next few months (given there are no unexpected bugs).
Thanks for the question