Nothing to see here...
Originally Posted by SPIGEN
"Due to recent leaks we’re anticipating a Nexus 5 announcement shortly so we’ve put up place-holder listings in advance... 10/31 is just an estimated date that we’ve decided upon since we believe the Nexus 5 will be announced early October."
Source: Android Police emailed them about it. I won't post the link for language, but if you're interesting in reading the whole thing you know where to find it
It goes on a pretty good rant about tech blogs and the need for fact checking before going hook line and sinker for rumors