*.tlb file -- per version of Visual Studio?

I haven't done COM in over 10 years so开发者_运维技巧 I was wondering:

When I utilize a 3rd party COM based SDK by importing its TLB file -- is it their responsibility to release a version of TLB for each version of visual studio I use their SDK with? or is TLB a "flat" binary file that fits all versions of visual studio?

The type library format is standardized and independent of any tool that reads it, including Visual Studio. Tools use ITypeLib and ITypeInfo to read one, implemented by Oleaut32.dll