macOS 11.0 Big Sur compatibility with Mac Book Pro 2013

Solution 1:

An "early 2013" is either a MacBookPro10,1 or a MacBookPro10,2... same machine ID as the 2012's, just with faster processors. They ARE in everymac's list and in mactracker's list... don't waste time with information from OWC.

The answer to your question about support is that the 10,x are on the vintage list, and the 11,x are not. The 11,x have arguably better graphics support than the 10,x do.

The 10,x machines support Catalina. ref: support.apple.com/en-us/HT210222

Solution 2:

Yes, this in fact is an existing restriction with Catalina (see screenshot). It is unsurprising that the version of Mac OSX after Catalina has the same limitation; ultimately the hardware gets left behind as it becomes incompatible with changes in the OS.

See this table from https://eshop.macsales.com/guides/Mac_OS_X_Compatibility:

EveryMac lists the specifications of the Early and Late 2013 MacBook Pros at https://everymac.com/systems/by_year/macs-released-in-2013.html