What country are you in?
I work for a reseller as well. Basically, we are not expecting to get any more kit shipments this year for new orders. We let any customer looking to order kit they won't get it this year. Earlier in the year we got customers we knew who wanted projects done to already everything in advance, so those ones are all sorted.
The labour market has been really tight in most parts of the world, and this is also affecting Meraki. It is really hard to find people to fulfil positions.
Most economies went into rampant money printing over the COVID issue, which lead to low unemployment. But over the next 12 months, inflation should really grip the world, unemployment will rise, and it will become much easier to fill those vacant jobs (what's left of them).
Your reseller should be logging into the Meraki Partner portal:
https://www.merakipartners.com/
From there, your reseller can look up shipping timeframes and answer most of the questions you have.
End of support for MX60s is October 24 2022, so weather you will get the MX67s before then will depend on how much earlier in the year you placed the order. it may be you left placing the order a little late.
It is not likely that the MX60s will suddenly stop working, so you should be fine - just not as comfortable as if you had the kit arrive beforehand.
What I have done for some of my customers who would otherwise be facing a network shutdown because their existing licence is expiring before their new kit and licences turn up is to arrange for them to get extended trial licences so that their existing system will continue working. I would wait till your existing licences have just expired before doing this.
Once you existing licences have expired, you can also open a support case, attach proof of purchase, and support can extend the shutdown date by an additional 30 days to buy you some more time while you wait for everything to arrive as well.
