Incidentally, to answer the thread's title more fully... after the VHB, sort of.
The Plan, such as it is, is to revisit these core books to refresh the art and make any little tweaks we think are beneficial - the idea being, we can keep Traveller evolving without actually doing a brand new edition and invalidating all the books you currently have.
So, there may come (say) Traveller Core Rulebook Update 2027, but your current Core Rulebook Update 2022 will still be valid and useable (and its predecessor, for that matter), and still be compatible with all new supplements and sourcebooks that get released in the future.
Even if there are more substantial changes, we will endeavour to keep those past rulebooks current and useable. For example, we have been tinkering with the Initiative system, but even if that were implemented, it won't invalidate the previous rulebooks (because all it is deciding is who goes first in a firefight, and you can choose precisely which mechanic you prefer - and if we are really clever, you will be able to use both, simultaneously at the same table, but I digress).
Now, being games designers, there is always the temptation to make more fundamental changes. For example, we are also considering Project Combat Evolved (that name will have to change, obviously) which makes some deeper changes in the way damage is handled. If we were to go forward with that in a new Core Rulebook, we would also provide a free PDF that updates the previous ones to remain compatible.
I suppose this is a way to turn Traveller into the Ship of Theseus...
That, at least, is The Plan. Basically, we want to keep Traveller fresh and relevant but not overturn the cart and invalidate huge swathes of your gaming library by doing a completely new edition.
Thoughts on this welcomed!