General Availability || Release Date for Cisco Products

[pkauzi]

Hello Experts, I have some question on Cisco's Lifecycle Dates.

Normally Cisco have these announcements where we can get End of Life/End of Sale Dates through Notices like: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/prod_end-of-life_notice0900aecd802e87bb.html

My question is if there are such End of Life/End of Sale Notices, how can i find out the Release Date/General Availability Date. For example taking the above URL, if i need to know the Release Date of those Part numbers of product, where can i find them ? 

It has become a road block when finding Release Dates. Can someone please advice? 

[marce1000]

     - The document says : The recommended replacements for the Cisco EOS products are listed in Table 3
        which does not exist , so that documentation is wrong.

   - The usual approach when devices are EOL is to look for current alternatives available :
      A good place to start for switches is : https://www.cisco.com/c/en/us/products/switches/switch-selector.html

  M.