Strange, but clicking on that link gives me a date of November 14, not October 10 :
Join us at 10 a.m. CT on Thursday, Nov. 14, 2013, as a team of experts and engineers discuss the latest updates to the RhoMobile Suite of software.
Similarly, this blog post here : https://developer.motorolasolutions.com/community/rhomobile-suite/rhomobile-community/rhomobile-blogs/blog/2013/10/07/whats-new-in-rhomobile-suite-40 towards the end says :
In addition we are hosting a Google+ Hangout this week to talk about RMS 4.0
but after that, it mentions Thursday, Nov. 14
BTW, how do you join the hangout, whatever the date?