To Pd-announce:
Pd version 0.50-0 is available on http://msp.ucsd.edu/software.htm or (source only) via github: https://github.com/pure-data/pure-data.
Several problems with zooming from 0.50test1 are fixed. There are numerous reported bugs still, but no show-stoppers, and I'm way late getting this out. So I'm putting off fixing many of them till the next release.
cheers Miller