Is texture Alpha channel handling likely to be better in latest release of #12 and pending #13 ?

Some image formats set as 'diffuse' seem to get their Alpha channel automatically 'picked up' and applied to 'transparency'.

Some seem to get half-way there, the transparency is not set, but may clash with attempts to set manually.
Fix is to re-save 'Diffuse' without Alpha, apply this and Alpha separately...

IMHO, it would take a Bondware 'coder' to look at the relevant paths, report on which format does what, and why...

I ask because eg MMD PMX models call PNGs, auto-apply their Alpha channel as transparency.

For Poser, I'm used to pulling Alpha channels out using eg free Irfan View or, for exotica, XN View.
I'd feel very silly if reliable 'Auto-apply from Diffuse' facility had arrived in 'Cycles' without me noticing...