I can answer all of these, though I am not an MSS person
>1. Will it be so that the MASTER DTD will be "dissolved" in the P5 TEI
yes. one of the aims of the new P5 MS chapter was to subsume Master work
> 2. What will be the main changes?
for that, you have to read the draft chater
>3. Will be here a "recommended"
>DTD for manuscript descriptions or should everyone put together its own?
you should just use the manuscript module in P5
>4. Is this http://www.tei-c.org.uk/Activities/MS/FASC-ms.pdf the draft
>for manuscript description elements in P5?
yes, it is.
>5. Could be something/all
>from MASTER+ put in the new complex DTD?
The manuscript chapter should be regarded as being very close
to a candidate release. That is not to say that work cannot continue on it,
but its late to make substantive changes to this version.
You should contact the manuscript description work group
chair (Matthew Driscoll) if there are changes you want to get into P5