Aqua-Soft ForumsI don't recall seeing an announcement but v0.1.5 of the OGG plugin was released in May. It's supposed to support meta tags but they don't work for me. 
http://www.xiph.org/quicktime/
version 0.1.5 (08.05.2006)
Note: recommended QuickTime version for this release is 7.0.4.
New features:
Universal Binary - XiphQT now works on both PPC and Intel Macs;
FLAC - FLAC decoder and importer for Ogg FLAC (no support for native FLAC file format yet);
Theora - Theora decoder and importer; this is the youngest component - some glitches are expected.
Fixes and improvements:
meta-data - XiphQT is now able to import user tags for all supported Xiph formats;
small audio decoding performance improvements:
audio samples are now decoded in larger chunks - decreased polling frequency and associated overhead,
release binaries are bow built with compiler optimisation flags switched on;
increased offsets accuracy for chained Vorbis and Speex streams;
fixed a bug in Speex decoder that prevented many valid Speex files from being properly decoded;
fixed a bug causing audible clicks near beginning of Vorbis and Speex files.