<p dir="auto"><a href="http://doc.scrapy.org/en/latest/versioning.html" rel="nofollow">Versioning and API Stability</a> states:</p>
<blockquote>
<p dir="auto">Scrapy uses the odd-numbered versions for development releases.<br>
(...) Even Bs will be stable branches, and odd Bs will be development.</p>
</blockquote>
<p dir="auto">I believe this is not true anymore starting with 1.1, 1.1 being the current recommended stable version.</p>
<p dir="auto">Quotes from <a href="http://doc.scrapy.org/en/1.0/versioning.html" rel="nofollow">http://doc.scrapy.org/en/1.0/versioning.html</a>:</p>
<blockquote>
<p dir="auto">Scrapy uses the odd-numbered versions for development releases.</p>
<p dir="auto">So far, only zero is available for A as Scrapy hasn’t yet reached 1.0.</p>
<p dir="auto">API stability is one of Scrapy major goals for the 1.0 release, which doesn’t have a due date scheduled yet.</p>
</blockquote>