Tonight at 3AM EST, a firmware update will begin rolling out to monitors. To avoid strain on our servers, firmware rollout is staged over five days. Within that five day period, your monitor will be updated overnight. At this time, there is no way to opt in for an immediate update.
There are no user-facing changes in this release. It may be in support of a pending incremental feature release, but I can neither confirm nor deny that at this time. 
To check if you received the update, navigate to Settings > My Home > Sense Monitor. Your firmware version will be given under the Monitor card. Please note that firmware updates can be delayed in some instances. If you have not received the update after 5 days, let me know.
Please PM me if you have any questions.