Thanks. I did sysupgrade to this pre-release and it seems to work fine.
I installed it over snapshot build with option to keep settings - afterwards I just had to fix /etc/config/wireless to get wifi working (change 'platform/soc/18000000.wifi' to 'platform/18000000.wifi' due to kernel downgrade) and install a few custom packages, otherwise everything seems OK.
Kernel version is 5.15.162 (I had 6.6.35 on the snapshot r26815).
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