The following has been copied/pasted from https://forum.avast.com/index.php?topic=187663.0
[We are] happy to announce a new version of AVAST Antivirus (build number 12.1.2272 [Remark: The installer is labeled 12.1.3076]), called the NITRO Update.
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It's for these products: Free Antivirus, Pro Antivirus, Internet Security and Premier.
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This update is focused on improving the performance and detection capabilities.We also stopped using the year [2017] in [the] product name, as we will be releasing new versions inmonthly cycles from now [on].
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We also removed some features that might have been causing problems or not being used by many users in order to make Avast faster and lighter.
What's new:
+ Lower system impact - faster boot time, less space taken on disk
+ CyberCapture - better detection of unknown and unique files via our cloud technology
+ Regular monthly program updates - automatic and silent, configurable via Settings
+ Improved detection of router vulnerabilities
+ New Bank mode in SafeZone browser
+ Faster SecureLine connection
+ Antispam is now as opt-in component
- Removed hardware virtualization (NG) - replaced with CyberCapture, that has much lower impact on system resources
- Removed Remote assistance - not used enough and not a core functionality
How to install:
1. Update from existing Avast version via Settings -> Update -> Update program
2. Or you can download and install from here:
http://files.avast.com/iavs9x/avast_free_antivirus_setup.exe
Offline installers [211 MB]:
http://files.avast.com/iavs9x/avast_free_antivirus_setup_offline.exe