I also see no mainline builds since May14th. I was wanting to get the Ubuntu kernel configuration for kernel 7.1-rc4. I missed kernel 7.1-rc3, but was wanting to check if the kernel configuration dependency issue has been fixed (from the compile log (AMD64)):
WARNING: unmet direct dependencies detected for MFD_STMFX
Depends on [n]: HAS_IOMEM [=y] && I2C [=y] && OF [=n]
Selected by [m]:
- PINCTRL_STMFX [=m] && PINCTRL [=y] && I2C [=y] && HAS_IOMEM [=y]
While CONFIG_MFD_STMFX is not a new kernel configuration setting, it is new that Ubuntu declares it, at least as far as I have been able to determine.
For the question about where to post about the mainline, there is also this thread, which is where I posted last time I had an issue with mainline.