1.61.0 should be in unstable by now and is still waiting for some non-amd64 fixes before we will proceed to 1.62.0. rustc needs to be updated release by release as there are no guarantees that release N-X where X > 1 is able to build release N.
my plan is to proceed with the next releases one by one at least until the freeze starts, but ironing out all the arch-specific kinks for each release always takes a bit of time.