Just posted to the Latam Commercial Technical Support Blog is this post on an upcoming time zone change Quintana Roo, home of worldwide, popular destinations of Cancún, Cozumel and Isla Mujeres. We have received news reports in the region that the change in Quintana Roo (currently on GMT-6 and changing to GMT-5) will adjust the local time one hour forward effective on 1 February 2015 at 2:00 AM local time.
As this time zone change is different from what was previously defined, Windows-based devices won’t reflect the change. In addition, other software, OS releases and hardware (phones, routers, switches and managed devices) may require updates and/or changes.
One mitigation available for affected users is to manually move systems to an appropriate time zone (such as the time zone in UTC-05:00 for Bogota, Lima, Quito, Rio Branco) on February 1.
An important disclaimer: At this time there is NO official decree for this change, so we are publishing this in advance. Please refer to the following announcement available at http://www5.diputados.gob.mx/index.php/esl/Comunicacion/Boletines/2014/Diciembre/04/4764-Diputados-avalan-crear-la-Zona-Horaria-Sureste-para-Quintana-Roo.
Here's our regular advice for governments: in support of these types of changes, we provide guidance and Microsoft's Policy in Response to DST/TZ Requests. It's important for countries and territories to work towards seamless transitions to new DST and time zones policies, providing ample advance notice (of a year or more) with published confirmation of planned changes.
Available via http://bit.ly/1v67PY2