Advanced SystemCare with Antivirus 2013 is a version IObit's "do everything" PC maintenance suite, combined with a dual security engine.
As you'll guess from the name, the big addition is antivirus protection, both real-time and on demand, which is provided by the IObit and BitDefender engines. This means the program is more likely to complain of potential conflicts on installation if you're already running some other antivirus tool. However, you can install in a "compatibility mode", which drops the real-time protection to minimise the chance of problems. And otherwise the program works much like any other antivirus tool. You can run quick or full system scans; set up a scheduled scan to run whenever it's convenient; have the program run in a "Silent Mode" when you're playing games to minimise unnecessary notifications, and more.
Elsewhere Advanced SystemCare with Antivirus 2013 works mostly just as it always did. So there are tools to clean junk files, optimise your Startup programs, clean and defrag the Registry, scan for and fix Windows vulnerabilities, and a whole lot more.
And as previously, if you prefer the simple life then you can leave the program to take care of most maintenance tasks all on its own. Or, if you'd like to keep control, then you can manually run a tool to, say, optimise your Internet connection settings, and use your expertise to ensure your PC is running at the maximum possible speeds.
Note that this is the final version of Advanced SystemCare with AntiVirus, which is now branded as "2013".
Including full antivirus in Advanced SystemCare seems like a natural move. Whether it's worth the potential conflicts with other packages is more open to question, though.