https://www.snort.org/downloads in the Latest Release section.
2013-09-12 - Snort 188.8.131.52
* Address issue with SMTP preprocessor and the ignore_tls_data configuration
to correctly stop inspection after an SMTP session is encrypted.
* Disable all rule evaluation (as opposed to just rules with fast patterns)
for packets on a previously blocked session.
* Corrected when perfmon preprocessor writes stats to occur as soon as
both the time and packet count criteria are met.
* Enforce same restrictions on relative PCRE for HTTP buffers from
shared library rules as already existed with text rules.
Please submit bugs, questions, and feedback to firstname.lastname@example.org.
The Snort Release Team