Metaquotes are about to set another limit to the live builds range (currently the build 950 is guaranteed, and build 940 still works with some brokers).
The build 1065 is rather buggy, so I expect the 1080 is nothing more than an official hot fix release, which will be deployed by brokers as a usual update.
The original message reads:
Important Update for MetaTrader 4 build 1080
The MetaTrader 4 platform update will be released on May 12, 2017. We strongly recommend that you install this update.
A month ago, Microsoft released a major update of their operating system Windows 10 Creators Update (version 1703). After installing this update, some users were unable to run MQL4 programs in their terminals. This issue has been fixed in the new MetaTrader 4 platform build 1080. Now, Expert Advisors and indicators will run on charts correctly, while recompilation using the updated MetaEditor is not required.
Support for MetaTrader 4 client terminal versions below 1065 will be discontinued on the 1st of October 2017. Unsupported terminal builds will not be able to connect to new server versions. We strongly recommend that you update your terminals in advance.
The update will be available through the LiveUpdate system.