I can confirm that as of 2 months ago, the Adobe LCES Designer 11 installation requires the SP1 to be installed separately (I keep both .exe's together in the same folder and you only need you product key on hand for the LCD 11 install, not the subsequent SP1 install).
Only then will the Version ID change to 11.0.1
I'm not aware of any additional Service Packs released since the original. My cursory investigation of the background/purpose of SP1 indicates that it was primarily released to enable and improve the web form services (functionality related to Forms Manager, use of XFA forms technology on mobile/tablet devices, cloud storage and access for forms) which is something I won't invest my time in until someone can confirm that collecting and sharing data between multiple users is not going to cost me $20,000+
Hope this info helps.
Cheers David