what's the difference between ID3v1, ID3v2.2 & ID3v2.3 tags and ID3v2.4 tags

Can't find the following in the FAQs or search (where the question was asked exactly as is written below):

what's the difference between ID3v1, ID3v2.2 & ID3v2.3 tags and ID3v2.4 tags

Thank you

Maybe this topic can help you a bit.