It is not Sage that is accelerating end of support for older Versions. SAP recently announced end of support for version 9.0 of Business One later this year. Version 9.1 just became generally available in January and 9.2 will not be out before 9.0 is deemed not supported.
In their infinite wisdom it appears that publishers believe all customers should update every time a patch comes out and upgrade every time a version comes out regardless of integrations, third party products or general cost of testing.