I guess they will stop supporting them as soon as we stop buying them.
As they are selling them as fast as they can make them, that could be a very long time.
I only have 4, I can think of ways to use 10 times that just in my house
The BCM2835 could be around for a very long time, well in unicorn years anyway.
It was not new when they started, but it fits the application nearly perfectly.
The over clocking seems to work, 1GHz on zero's, that's quite a bit faster than A+/B+.
We might only see Zero W's as I imagine there might be a tiny bit more profit in them.
The BCM2837 is a different animal as it is chasing the Desktop, where pretty colours, browsers and fast accelerated stuff is needed. Software improvements and tricks can give it a few more years of life.
A die shrink will extend that some, allowing for some more overclocking without heating issues?
A roadmap where the A+/B+ BCM2835's are replaced with 64bit CPU's some time in the future will free up the BCM2835.
Then we may get lots more Zero's
Are the Zero numbers restricted by BCM2835 supply, other chips or lack of factory capacity?
RPF knows, we can only speculate and suggest conspiracy theories
Some recent hints suggest a change soonish - unicorn weeks/months, not years.
The Zero PCB format looks to be a winner, much easier to use for us tinkers/hackers than the CM's.
Future ones may not be single sided or have BCM2835's 10 years from now. Or there may be more BCM283x versions as well.
If Zero's stop getting made 5 years from now, I'm sure third party versions will appear.
BCM2835- ARMv6, 1176 - just a fancy microcontroller + VC4(shh, top secret
BCM2837- ARMv8 -64bit quad core - yippee.
That ARMv7 32bit compatibility mode on the Pi2/3, ouch my head hurts too.
Forgive me but I am going to skip that and just do pure 64bit mode.
I have no legacy software support needs.
In fact there is lots of Linux stuff I want to forget to make room for new stuff, like AI/ML/CV/NN.
I'm not worried about LTS I have no company relying on Pi's.
RPF will be making something I can use, hopefully into retirement.
I'm dancing on Rainbows.
Raspberries are not Apples or Oranges