Avisynth 2.5.7 RC2 is released here is the link
Version 2.5.7 RC2
* Release Date: Dec 25, 2006
* Additions:
o Blur()/Sharpen() MMX=False option to force use of C++ routines.
o Explicitly try to request input sample rate from the audio codec (Tritical).
* Bugfixes:
o Fixed DirectShowSource greyframe regression.
o Fixed DirectShowSource audio format negotiation regression.
o Fixed TCPDeliver YV12 transfer 50% to much data.
o Fixed TCPDeliver do Makewritable before getting params.
o Fixed TCPDeliver audio transfer off by 4 bytes.
o Fixed resizer core boundary condition crashes/errors/glitches.
o Fixed Invert() crash with small widths.
o Fixed small memory leak Amplify().
o Fixed grey frames with internal start, stop, start while DSS is initializing.
o Fixed AudioChannels() returning non-zero when no audio (Tritical).
Optimizations:
o TCPDeliver big buffer enhancement (retro from 2.6 stream).
Changes:
o TCPDeliver add icon, make all resource US English
* Release Date: Dec 25, 2006
* Additions:
o Blur()/Sharpen() MMX=False option to force use of C++ routines.
o Explicitly try to request input sample rate from the audio codec (Tritical).
* Bugfixes:
o Fixed DirectShowSource greyframe regression.
o Fixed DirectShowSource audio format negotiation regression.
o Fixed TCPDeliver YV12 transfer 50% to much data.
o Fixed TCPDeliver do Makewritable before getting params.
o Fixed TCPDeliver audio transfer off by 4 bytes.
o Fixed resizer core boundary condition crashes/errors/glitches.
o Fixed Invert() crash with small widths.
o Fixed small memory leak Amplify().
o Fixed grey frames with internal start, stop, start while DSS is initializing.
o Fixed AudioChannels() returning non-zero when no audio (Tritical).
Optimizations:
o TCPDeliver big buffer enhancement (retro from 2.6 stream).
Changes:
o TCPDeliver add icon, make all resource US English