topic link 2.0

It looks like you might be referring to a specific concept or a designation that's not immediately recognizable. "Topic link 2.0" could pertain to various subjects depending on the context, such as updates to a certain platform, a technology, or even a particular methodology in a field like SEO or content management. Could you please provide more context or clarify what you mean by "topic link 2.0"? This would help in giving you the most accurate and relevant information.